AR- Abzüge

  High Quality AR15 Lower Parts Kit, our Kits are compatible with mil-spec and non mil-spec receivers. This is machined to exceed all MIL TDP specifications. Kit includes: Fire control group Fire control group pins and springs Bolt catch assembly Magazine catch assembly Front pivot pin Rear takedown pin Takedown springs (2 pcs) Takedown detents (2 pcs) Enhanced Polymer Trigger Guard Trigger guard and pin Grip screw and washer Buffer detent Buffer detent spring A2 Pistol Grip Information: Compatible Caliber: Full AR-15 Platform Comes in Bulk-Pack  MADE IN THE USA

  Our EPC Lower Receivers include the proprietary parts pre-installed from the factory. Other parts and components for assembling your lower receiver are standard AR15 compatible parts. Our EPC Lower Parts Kits include just the parts you need for assembling your EPC Lower Receiver and nothing else. PARTS INCLUDED: Takedown/pivot Spring Takedown/pivot detent Hardened trigger/hammer pins Takedown pin Pivot pin Bolt Catch Bolt Catch Spring Bolt Catch buffer Bolt catch roll pin Safety Selector Safety Selector spring Safety Selector detent 4-40 Set Screw (for threaded takedown pin detent hole) Buffer retainer Buffer retainer spring Magpul MOE® grip Pistol grip screw Trigger spring Hammer spring Disconnector spring Hammer Trigger Disconnector NOTE: Compatible to AR15 Mil-Spec Lower Receivers NOT compatible to HAENEL and HECKLER & KOCH Firearms Compatible accessories see under this article, accessories MADE IN THE USA

  Our EPC Lower Receivers include the proprietary parts pre-installed from the factory. Other parts and components for assembling your lower receiver are standard AR15 compatible parts. Our EPC Lower Parts Kits include just the parts you need for assembling your EPC Lower Receiver and nothing else. PARTS INCLUDED: Takedown/pivot Spring Takedown/pivot detent Hardened trigger/hammer pins Takedown pin Pivot pin Bolt Catch Bolt Catch Spring Bolt Catch buffer Bolt catch roll pin Safety Selector Safety Selector spring Safety Selector detent 4-40 Set Screw (for threaded takedown pin detent hole) Buffer retainer Buffer retainer spring Magpul MOE® grip Pistol grip screw Trigger spring Hammer spring Disconnector spring Hammer Trigger Disconnector NOTE: Compatible to AR15 Mil-Spec Lower Receivers NOT compatible to HAENEL and HECKLER & KOCH Firearms Compatible accessories see under this article, accessories MADE IN THE USA

  The Schmid Tool 2-stage trigger features a 4.5 lb total pull weight and a durable Nickel Boron finish, ensuring a smooth pull and crisp break every time you squeeze the trigger. The two stages of this trigger consist of an initial 2 lb pull that brings you to a “wall”, where the hammer and trigger are set to break for the shot. After that, it’s only a 2.5 lb pull to fire, helping you to make accurate shots with short resets in between. PARTS INCLUDED: 2-Stage Nickel Boron Trigger 2-Stage Nickel Boron Hammer 2-Stage Disconnector Trigger spring Trigger pin Hammer pin Hammer spring Disconnector spring NOTE: Compatible to AR15/AR10 Mil-Spec Lower Receivers NOT compatible to HAENEL and HECKLER & KOCH Firearms Compatible accessories see under this article, accessories MADE IN THE USA

  Constructed to withstand the heavy recoil impulse generated by direct blowback PCCs, these hardened trigger/hammer pins are the same that are included in all Aero Precision EPC fire control groups. These pins are also compatible with mil-spec AR15 lower receivers, AR-10 / M5 lower receivers and triggers. PARTS INCLUDED: 2 pcs hardened fire control group pins NOTE: Compatible to AR15 / AR10 / EPC-9 Mil-Spec Lower Receivers NOT compatible to HAENEL and HECKLER & KOCH Firearms Compatible accessories see under this article, accessories MADE IN THE USA

  Excellent for customization, the AIM Sports Inc Complete Mil-Spec Lower Parts Kit was designed to be the ideal lower receiver for anybody attempting to enhance the quality of their shooting experiences. These AR15 Lower Parts from the specialists at AIM Sports Inc are made using the kinds of effective and strong materials you are expecting to come out of this renowned name. AIM Sports Inc has been devoted to building top notch AR15 Lower Parts for a particularly prolonged time, and the AIM Sports Inc Complete Lower Parts Kit is the direct result of their relentless efforts and special attention to fine detail. 

  The ALG Defense Advanced Combat Trigger (ACT) is designed for those shooters where tradition, value and regulatory concerns are of primary importance. The pull of the ACT is very similar to a standard mil-spec trigger, however it is sharper and the grittiness of the stock trigger pull has been removed while the traditional reliability of a stock trigger remains. The pull weight is not lower than the M4/M16 minimum weight specification of 5.5lbs. HardLubing is ALG's term for electroless Nickel plating with an integral modifier to the base nickel plate. Either Boron or Teflon is used to enhance surface hardness, wear resistance and corrosion resistance and also create favorable tribological properties of the trigger components. Testing has shown that differential coating of the trigger parts contributes to the sharpness of the ACT's single stage pull. The trigger component is plated with Nickel-Boron which has a high surface hardness combined with excellent wear resistance. The color is a pleasing matte light grey that may be painted on non-functional surfaces if the shooter so desires (such as the trigger bow that is visible outside the lower receiver). The hammer and disconnector are plated with Nickel-Teflon which combines a low coefficient of friction with good wear resistance. The Teflon impregnation colors the metal a mottled, greyish/green. Parts coated with Nickel-Teflon cannot be painted. Both coatings are highly corrosion resistant eliminating the oil seal of traditional phosphated firearm components. Specs: The ALG Defense ACT trigger pull is smoother and sharper than a stock trigger. This is accomplished by polishing the sear surfaces smooth and HardLubing the trigger components. Sear geometry has not been changed from the standard profile so the high reliability that the stock trigger is known for is unchanged. Trigger and hammer are made from true 8620 alloy steel military specification castings, correctly carburized, quenched and tempered for high surface hardness. Disconnector is 1070 High Carbon steel properly Austempered into the spring range of hardness. Springs are corrosion resistant and meet military specifications. A full force hammer spring is used for positive ignition of all type of ammunition. Trigger and hammer pins are improved over stock mild steel by using 4140 Chrome-Moly steel that has been quenched and tempered. Pins are centerless ground to a fine finish and a diameter 0.001” larger than stock to reduce play in the trigger assembly while retaining a slip fit into the lower receiver. Pull weight is above the U.S. Military minimum pull weight of 5.5lbs but does not reach near the upper limit of 9.5lbs. Generally, the pull weight is about 6.0lbs. Advantages for the Armorer The ALG Defense ACT trigger is an enhanced standard trigger so maintenance and installation procedures are unchanged. Trigger assembly parts may be interchanged between triggers, there are no matched sets. As a trigger meeting the essential U.S. Military trigger specifications for the M4 Carbine, the ALG Defense ACT can be substituted for lower performing stock triggers while still staying in compliance with Unit or Departmental requirements Compatibility: Compatible with AR-15/M4 models according to Mil-Spec diameters Not compatible with HAENEL or HECKLER & KOCH models   MADE IN THE USA

  Complete AR15/M4 Mil-Spec Lower Parts Kit with ACT Trigger This kit comes with: Bolt Catch, Bolt Catch Plunger, Bolt Catch Spring, Bolt Catch Roll Pin, Mag Release, Mag Release Button, Mag Release Spring, Buffer Retainer Spring, Safety, Buffer Retainer, Safety Detent Spring, Safety Detent, Trigger Guard, Trigger Guard Roll Pin, Takedown Detent Springs,Takedown Detents,Takedown Pins, ACT Trigger Compatibility: Compatible with AR-15/M4 models according to Mil-Spec diameters Not compatible with HAENEL or HECKLER & KOCH models Specs:   1.         Bolt Catch  2.         Bolt Catch Plunger  3.         Bolt Catch Spring  4.         Bolt Catch Roll Pin  5.         Mag Release  6.         Mag Release Button  7.         Mag Release Spring  8.         Buffer Retainer Spring  9.         Posi-Snap Safety10.         Buffer Retainer11.         Safety Detent Spring12.         Safety Detent13.         Trigger Guard14.         Trigger Guard Roll Pin15.         Takedown Detent Springs16.         Takedown Detents17.         Takedown Pins18.         ACT Trigger   MADE IN THE USA

  Complete AR15/M4 Mil-Spec Lower Parts Kit with ACT Trigger (With Grip) This kit comes with: Grip, Grip Screw Washer, Grip Screw, Bolt Catch, Bolt Catch Plunger, Bolt Catch Spring, Bolt Catch Roll Pin, Mag Release, Mag Release Button, Mag Release Spring, Buffer Retainer Spring, Posi-Snap Safety, Buffer Retainer, Safety Detent Spring, Safety Detent, Trigger Guard, Trigger Guard Roll Pin, Takedown Detent Springs,Takedown Detents,Takedown Pins, ACT Trigger Compatibility: Compatible with AR-15/M4 models according to Mil-Spec diameters Not compatible with HAENEL or HECKLER & KOCH models Specs:   1.         Grip  2.         Grip Screw Washer  3.         Grip Screw  4.         Bolt Catch  5.         Bolt Catch Plunger  6.         Bolt Catch Spring  7.         Bolt Catch Roll Pin  8.         Mag Release  9.         Mag Release Button10.         Mag Release Spring11.         Buffer Retainer Spring12.         Posi-Snap Safety13.         Buffer Retainer14.         Safety Detent Spring15.         Safety Detent16.         Trigger Guard17.         Trigger Guard Roll Pin18.         Takedown Detent Springs19.         Takedown Detents20.         Takedown Pins21.         ACT Trigger   MADE IN THE USA

  Replacement Trigger spring for Mil-Spec AR triggers such as the QMS and ACT Trigger System. Full tension high quality mil-spec spring.   MADE IN THE USA  

  Complete AR15/M4 Mil-Spec Lower Parts Kit with QMS Trigger This kit comes with: Bolt Catch, Bolt Catch Plunger, Bolt Catch Spring, Bolt Catch Roll Pin, Mag Release, Mag Release Button, Mag Release Spring, Buffer Retainer Spring, Safety, Buffer Retainer, Safety Detent Spring, Safety Detent, Trigger Guard, Trigger Guard Roll Pin, Takedown Detent Springs,Takedown Detents,Takedown Pins, QMS Trigger Compatibility: Compatible with AR-15/M4 models according to Mil-Spec diameters Not compatible with HAENEL or HECKLER & KOCH models Specs:   1.         Bolt Catch  2.         Bolt Catch Plunger  3.         Bolt Catch Spring  4.         Bolt Catch Roll Pin  5.         Mag Release  6.         Mag Release Button  7.         Mag Release Spring  8.         Buffer Retainer Spring  9.         Posi-Snap Safety10.         Buffer Retainer11.         Safety Detent Spring12.         Safety Detent13.         Trigger Guard14.         Trigger Guard Roll Pin15.         Takedown Detent Springs16.         Takedown Detents17.         Takedown Pins18.         QMS Trigger   MADE IN THE USA

  Complete AR15/M4 Mil-Spec Lower Parts Kit with QMS Trigger (With Grip) This kit comes with: Grip, Grip Screw Washer, Grip Screw, Bolt Catch, Bolt Catch Plunger, Bolt Catch Spring, Bolt Catch Roll Pin, Mag Release, Mag Release Button, Mag Release Spring, Buffer Retainer Spring, Posi-Snap Safety, Buffer Retainer, Safety Detent Spring, Safety Detent, Trigger Guard, Trigger Guard Roll Pin, Takedown Detent Springs,Takedown Detents,Takedown Pins, QMS Trigger Compatibility: Compatible with AR-15/M4 models according to Mil-Spec diameters Not compatible with HAENEL or HECKLER & KOCH models Specs: 1.           Grip2.           Grip Screw Washer3.           Grip Screw4.           Bolt Catch5.           Bolt Catch Plunger6.           Bolt Catch Spring7.           Bolt Catch Roll Pin8.           Mag Release9.           Mag Release Button10.         Mag Release Spring11.         Buffer Retainer Spring12.         Posi-Snap Safety13.         Buffer Retainer14.         Saftey Detent Spring15.         Saftey Detent16.         Trigger Guard17.         Trigger Guard Roll Pin18.         Takedown Detent Springs19.         Takedown Detents20.         Takedown Pins21.         QMS Trigger  MADE IN THE USA

   This kit includes: AM-10 Gen II front pivot pin with detent and spring, magazine button assembly including magazine bar, button and spring, bolt catch assembly including bolt catch, bolt catch spring and plunger, threaded bolt catch pin, complete safety assembly with safety selector, safety detent and spring, Mil-Spec hammer with hammer spring and trigger with trigger spring and disconnector spring, disconnector, (2) fire control group pins, AM-10 rear takedown pin, rear takedown spring and detent, buffer detent spring and buffer detent, A2 style pistol grip with screw and lock washer.  100% AMERICAN MADE. 100% ANDERSON.

  Hochwertige DISCONNECTOR SPRING, kompatibel zu allen AR-15 / AR-10 MIL-SPEC Abzügen in jedem Kaliber.

  The Whoops Kit comes with the Springs and Detents that can easily get misplaced when you are installing them and/or replacing them.  DETAILS: Bolt Catch Detent Bolt Catch Pin 3/32" x 1/2" Coiled Pin     Bolt Catch Spring Buffer Detent Buffer Detent Spring Disconnect Spring Magazine Catch Spring for AR15     Safety Selector Detent for AR15    Safety Selector Spring      2 pcs Take Down Pivot Pin Detent 2 pcs Detent Take Down Spring Hammer Spring Mil-Spec 1/8 x 5/8 coiled Roll Pin for Trigger Guard  2 pcs Trigger and Hammer Pin  Trigger Spring Mil-Spec

Hochwertiger DIS-CONNECTOR , kompatibel zu allen AR-15 / AR-10 MIL-SPEC Abzügen in jedem Kaliber.

  Hochwertige HAMMER SPRING, Semi-Auto, kompatibel zu AR-15 / AR-10 MIL-SPEC Abzügen in jedem Kaliber. 

  Hochwertiger werkspolierter SINGLE STAGE HAMMER aus Edelstahl, kompatibel zu allen AR-15 und AR-10 MIL-SPEC Lower in jedem Kaliber. Einbau nur in Verbund mit SINGLE STAGE TRIGGER, SINGLE STAGE TRIGGER SPRING, DISCONNECTOR SPRING, DISCONNECTOR und HAMMER SPRING von ANDERSON ARMS. Komplette Standard und SS Premium Lower Parts Kits siehe unter diesem Artikel, Zubehör 

  Hochwertiger werkspolierter SINGLE STAGE Premium TRIGGER aus Edelstahl, kompatibel zu allen AR-15 und AR-10 MIL-SPEC Lower in jedem Kaliber. Einbau nur in Verbund mit SINGLE STAGE TRIGGER SPRING, DISCONNECTOR SPRING, DISCONNECTOR, HAMMER und HAMMER SPRING von ANDERSON. Komplette Standard und SS Premium Lower Parts Kits siehe unter diesem Artikel, Zubehör   

  Hochwertige TRIGGER SPRING, Semi-Auto, kompatibel zu AR-15 / AR-10 MIL-SPEC Abzügen in jedem Kaliber.   

  Armaspec Stainless Steel Gun Builder’s Lower Parts Kit less Trigger Group & Grip for AR-15. If you are looking for a high end gun builder's kit, than this one is for you. It incorporates all the great products from Armaspec in one package. FEATURES:  Includes Armaspec Enhanced Lower Parts Compatible with most AR-15 lowers Made in the U.S.A. SPECIFICATIONS:  Material: Aluminum Height: 0.625" Width: 0.625" Wight: 0.18 oz. COMPATIBILITY:  AR-15 Mil-Spec Lower Receiver NOT compatible to AR-10, Haenel and Heckler & Koch models INCLUDES:  1x Armaspec SFT 45/90 Safety Selector 1x Bolt Catch 1x Enhanced Takedown and Pivot Pins 1x Stainless Steel Takedown detent 1x Takedown Detent Spring 1x Stainless Steel Pivot Detent 1x Pivot Detent Spring 1x Stainless Steel Anti-Walk Trigger/Hammer Pins 1x Stainless Steel Buffer Retainer 1x Magazine Catch 1x Magazine Spring 1x Enhanced Magazine Release Button 1x Stainless Steel Bolt Catch Detent 1x Stainless Steel Safety Selector Detent 1x Bolt Catch Roll Pin 1x Bolt Catch Spring 1x Buffer Retainer Spring 1x Selector Detent Spring 1x Hex Keys for Anti-Walk Pins Note: This is “NOT” a complete lower parts kit. This is a builder’s kit. This Kit does NOT include the Pistol Grip, Pistol Grip Screw and Washer, Trigger and Hammer, Trigger and Hammer Springs, Disconnect, Disconnect Spring, Trigger Guard and Roll Pin. MADE IN THE USA

  BCM® Enhanced Lower Parts Kit for your AR15 Lower ReceiverThis kit includes all the Mil-Spec quality components you have come to expect from BCM, along with some fantastic upgrades to include;BCM PNT Trigger AssemblyBCM Pistol Grip, Mod 3BCM Enhanced Trigger GuardIn a commercial market flooded with imported and low quality Mil-Spec imitations, you can trust that BCM® parts are made in the USA and to the highest standards. Please look at the information below.BCM PNT Trigger Assembly (Polished Nickel Teflon)BCM quality, modern manufacturing processes, and aerospace coatings are combined to ensure parts last a lifetime while performing far beyond requirements established nearly six decades ago.The BCM PNT Trigger and PNT Hammer are a precision machined Mil-Spec AISI8620 investment casting per the USGI TDP (Mil-Spec) for M16/M4 family of weapons. (not to be confused with MIM parts that are very common in the commercial market). 156/157 holes are honed to assist in perfect alignment and a smooth trigger pull.After that, the BCM PNT Trigger and PNT Hammer then goes through a 3 step heat treat and case hardening process for optimal grain structure alignment, yielding a stronger and more wear resistance product..PolishedThe sear engagement surfaces are ground, but then hand polished for an increased smoothness up to 300% beyond the Mil-Spec.NickelAn electroless nickel finish is applied for a smoother trigger pull with less grit and reduced felt creep . Nickel also provides a long lasting finish that will not corrode, rust, or discolor due to oxidation.TeflonTeflon particles are embedded in the nickel, further reducing the friction of the interface and ensuring a long lasting coating. This is done on both the BCM PNT Trigger and Hammer in order to provide the maximum benefit allowed by the nickel coating, by augmenting the low friction and corrosion resistance.This assembly includes our impact resistant trigger and hammer pins. They are centerless ground to a fine finish and superior tolerances to ensure compatibility with all MIL SPEC lower receivers built per the USGI TDP.The BCM Disconnector is stamped from a 1070 material and fine blanked for cleaner edges, double disc ground to precise size. All hammer engagement surfaces are also ground for a super clean reset.The processes and tolerances are matched in the BCM PNT Trigger Assembly to create a system better than the sum of its parts.Bolt Catch and Safety SelectorThe BCM Bolt Catch and Safety Selector are a Mil-Spec AISI8620 investment casting per the USGI TDP for M16/M4 family of weapons. (not to be confused with MIM parts that are very common in the commercial market)The Safety Selector is center-less ground. The Selector and Bolt Catch are machined to the Mil-Spec , then goes through a 3 step heat treat and case hardening process for optimal grain structure and wear resistance. Has a phosphate finish for corrosion resistance.BCM Magazine CatchThe BCM Magazine Catch Assembly (plate and the post) is precision machined Mil-Spec AISI8620 per the USGI TDP for M16/M4 family of weapons. (not to be confused with MIM parts that are very common in the commercial market) and a hardened alloy steel shaft.The BCM Magazine Catch is machined to the Mil-Spec , then goes through a 3 step heat treat and case hardening process for optimal grain structure and wear resistance. The shaft is hardened, centerless ground, and precision threaded. Parts are assembled and staked per the USGI TDP and given a phosphate finish for corrosion resistance.BCM Rear Takedown Pin and Front Pivot PinBCM Rear Takedown Pins and Front Pivot Pins are made from AISI8620 bar stock and machined per the USGI TDP for M16/M4 family of weapons. Our takedown pins are given a 3 step heat treat processes and the diameters are ground to final size prior to a corrosion resistant phosphate finish.BCM Detents and SpringsTakedown detents include a cadmium chromate coating to resist corrosion and prevent them seizing in the small holes of the lower receiver while the Buffer retainer and Bolt Stop Plunger are made from hardened alloy steel for wear resistance and finished with a phosphate coating to prevent corrosion. The Springs are 17-7PH Stainless Steel to prevent corrosion and retain adequate tension for a lifetime of service.This BCM Enhanced Lower Parts Kit includes:1. BCM PNT Hammer2. Hammer Spring3. BCM PNT Trigger4. Trigger Spring5. Hammer/Trigger Pins6. Disconnector7. Disconnector Spring8. Bolt Catch9. Bolt Catch Plunger10. Bolt Catch Spring11. Bolt Stop Pin12. Rear Pivot Pin13. Buffer Retainer14. Buffer Retainer Spring15. Magazine Catch Button16. Magazine Catch Spring17. Magazine Catch18. Rear Take Down Pin19. Selector (Safety)20. Selector Detent21. Selector Detent Spring22. BCM Enhanced Trigger Guard23. BCM Trigger Guard Pin24. BCM Trigger Guard Screw25. BCM Pistol Grip Mod 3, Grip Screw, Locking Washer26. Take Down/ Pivot Pin Detent27. Take Down/ Pivot Pin Detent SpringAs with all BCM Life Saving Tools , Made in the USA.

  BCM® Enhanced Lower Parts Kit for your AR15 Lower ReceiverThis kit includes all the Mil-Spec quality components you have come to expect from BCM, along with some fantastic upgrades to include;BCM PNT Trigger AssemblyBCM Pistol Grip, Mod 3BCM Enhanced Trigger GuardIn a commercial market flooded with imported and low quality Mil-Spec imitations, you can trust that BCM® parts are made in the USA and to the highest standards. Please look at the information below.BCM PNT Trigger Assembly (Polished Nickel Teflon)BCM quality, modern manufacturing processes, and aerospace coatings are combined to ensure parts last a lifetime while performing far beyond requirements established nearly six decades ago.The BCM PNT Trigger and PNT Hammer are a precision machined Mil-Spec AISI8620 investment casting per the USGI TDP (Mil-Spec) for M16/M4 family of weapons. (not to be confused with MIM parts that are very common in the commercial market). 156/157 holes are honed to assist in perfect alignment and a smooth trigger pull.After that, the BCM PNT Trigger and PNT Hammer then goes through a 3 step heat treat and case hardening process for optimal grain structure alignment, yielding a stronger and more wear resistance product..PolishedThe sear engagement surfaces are ground, but then hand polished for an increased smoothness up to 300% beyond the Mil-Spec.NickelAn electroless nickel finish is applied for a smoother trigger pull with less grit and reduced felt creep . Nickel also provides a long lasting finish that will not corrode, rust, or discolor due to oxidation.TeflonTeflon particles are embedded in the nickel, further reducing the friction of the interface and ensuring a long lasting coating. This is done on both the BCM PNT Trigger and Hammer in order to provide the maximum benefit allowed by the nickel coating, by augmenting the low friction and corrosion resistance.This assembly includes our impact resistant trigger and hammer pins. They are centerless ground to a fine finish and superior tolerances to ensure compatibility with all MIL SPEC lower receivers built per the USGI TDP.The BCM Disconnector is stamped from a 1070 material and fine blanked for cleaner edges, double disc ground to precise size. All hammer engagement surfaces are also ground for a super clean reset.The processes and tolerances are matched in the BCM PNT Trigger Assembly to create a system better than the sum of its parts.Bolt Catch and Safety SelectorThe BCM Bolt Catch and Safety Selector are a Mil-Spec AISI8620 investment casting per the USGI TDP for M16/M4 family of weapons. (not to be confused with MIM parts that are very common in the commercial market)The Safety Selector is center-less ground. The Selector and Bolt Catch are machined to the Mil-Spec , then goes through a 3 step heat treat and case hardening process for optimal grain structure and wear resistance. Has a phosphate finish for corrosion resistance.BCM Magazine CatchThe BCM Magazine Catch Assembly (plate and the post) is precision machined Mil-Spec AISI8620 per the USGI TDP for M16/M4 family of weapons. (not to be confused with MIM parts that are very common in the commercial market) and a hardened alloy steel shaft.The BCM Magazine Catch is machined to the Mil-Spec , then goes through a 3 step heat treat and case hardening process for optimal grain structure and wear resistance. The shaft is hardened, centerless ground, and precision threaded. Parts are assembled and staked per the USGI TDP and given a phosphate finish for corrosion resistance.BCM Rear Takedown Pin and Front Pivot PinBCM Rear Takedown Pins and Front Pivot Pins are made from AISI8620 bar stock and machined per the USGI TDP for M16/M4 family of weapons. Our takedown pins are given a 3 step heat treat processes and the diameters are ground to final size prior to a corrosion resistant phosphate finish.BCM Detents and SpringsTakedown detents include a cadmium chromate coating to resist corrosion and prevent them seizing in the small holes of the lower receiver while the Buffer retainer and Bolt Stop Plunger are made from hardened alloy steel for wear resistance and finished with a phosphate coating to prevent corrosion. The Springs are 17-7PH Stainless Steel to prevent corrosion and retain adequate tension for a lifetime of service.This BCM Enhanced Lower Parts Kit includes:1. BCM PNT Hammer2. Hammer Spring3. BCM PNT Trigger4. Trigger Spring5. Hammer/Trigger Pins6. Disconnector7. Disconnector Spring8. Bolt Catch9. Bolt Catch Plunger10. Bolt Catch Spring11. Bolt Stop Pin12. Rear Pivot Pin13. Buffer Retainer14. Buffer Retainer Spring15. Magazine Catch Button16. Magazine Catch Spring17. Magazine Catch18. Rear Take Down Pin19. Selector (Safety)20. Selector Detent21. Selector Detent Spring22. BCM Enhanced Trigger Guard23. BCM Trigger Guard Pin24. BCM Trigger Guard Screw25. BCM Pistol Grip Mod 3, Grip Screw, Locking Washer26. Take Down/ Pivot Pin Detent27. Take Down/ Pivot Pin Detent SpringAs with all BCM Life Saving Tools , Made in the USA.

   This kit includes all the Mil-Spec quality components you have come to expect from BUSHMASTER® FIREARMS AR15 MIL-SPEC Trigger Kit includes: Hammer Hammer Spring Trigger Trigger Disconnect Spring Trigger Spring Disconnector Compatible accessories see under this article, accessories.