Bolt Carrier Group

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  1. 01-UP-556-CP : SMOOTHCAM DOMED CAM PIN 223/556

    The CP-R360™ Cam Pin has no moving parts to break or lock up.
    Machined from 17-4 PH Stainless Steel and hardened to H900 (45RC Approx) its head is polished for a super smooth finish. The cam pins circular head has a single flat face machined into it at the front so that it can be inserted into any bolt carrier without having to remove the gas key.
    Two further flats are machined at 90 degrees to the front face that assist in reducing internal wear to the cam channel.
    The unique domed head allows the cam pin to operate in a completely different position to a traditional pin, with the radius of the head curving away from the receivers internal surface, rather than forming a hard or sharp edge on its upper corner that causes wear.
    Finished in its natural hardened state, copper/brass color.

    NOTE:  Works on all Mil-Spec BCGs, 556 ONLY

    Made in the USA.

    Learn More
  2. 01-UP-556-FPIN : FIRING PIN 223/556

    High Quality Replecment .223/5.56 Firing PIn.

    8740 CS Steel

    45-49 HRC, Hard Chrome Plated, MIL-STD-171 1.2.2.4

    Learn More
  3. 01-UP-556-NIB-BA : BOLT ASSEMBLY 223/556 NIB

    Replacement Carpenter 158 Bolt Assembly

    Hard Ground Critical Diameters

    S110 Shot Peened, Heat Treated 15N 89-90.5 Hardness.

    Magnetic Particle Inspected.

    NiB Finished.

    Complete Assembly.

    Made in the USA.

    Learn More
  4. 01-UP-556-NIB-EXKIT : EXTRACTOR KIT 223/556 NIB

    Replacement .223/7.62 Extractor Assembly

    Comes complete with retaining pin, top hat insert, spring and 'O' ring.

    NiB Finished.

    Made in the USA

    Learn More
  5. 01-UP-556-NIT-BA : BOLT ASSEMBLY 223/556 BLK NIT

    Replacement Carpenter 158 Bolt Assembly

    Hard Ground Critical Diameters

    S110 Shot Peened, Heat Treated 15N 89-90.5 Hardness.

    Magnetic Particle Inspected.

    Black QPQ Finished.

    Complete Assembly.

    Made in the USA.

    Learn More
  6. 01-UP-556-NIT-EBCG : ENHANCED BCG 223/556 BLK NITRIDE

    LANTAC E-BCG®, Enhanced Bolt Carrier Group.

    M16 Full Auto Style for increased mass and lock time.
    Our BCG is precision machined from 8620 steel with a shot peened bolt manufactured from Carpenter 158 and Magnetically Particle Inspected.

    The entire carrier assembly is QPQ (Quench Polish Quench) Nitride coated Black, this is a specialized type of Nitrocarbrising Case Hardening that creates a vary hard, smooth surface with increased corrosion resistance and low coefficient of friction.
    The carriers patented and patent pending design features unique shrouded and forward facing gas ports that have also been resized so that gas is vented differently to a standard carrier.
    This results in a system that runs flatter with a smoother energy pulse with a softer start to carrier movement.

    In addition the system also runs cooler and cleaner, there is also less pressurization of the upper receiver when running a suppressed barrel.  The flared boss at the tail of the carrier enhances the BCG's lock position within the upper and makes it more consistent, resulting in an accuracy improvement.
    All critical dimensions are hard turned / ground after heat treat and the gas key has been hard chrome lined for the best possible wear resistance.

    All E-BCG's® feature the LANTAC CP-R360™ patent pending domed head cam pin that is machined from 17-4PH Stainless Steel and hardened to H900 condition (45RC approx).
    The ultra smooth head reduces wear within the upper receiver.
    The BCG's 11.7oz weight helps to increase lock time and smoother operation.
    Gas keys are fitted with gasket sealer & are properly staked at four points and only grade 8 fasteners are used in assembly.

    The E-BCG's® forward porting and unique shape assist in reducing pressurization inside the upper receiver that can be caused by short barrel rifles running suppressors.
    However, it should be noted that the E-BCG® is not a complete solution for this issue and all rifles are different. 'Over Gassed' guns will suffer to a larger extent from this problem.  

    Learn More
  7. 01-UP-556-NIT-EXKIT : EXTRACTOR KIT 223/556 BLK NIT

    Replacement .223/7.62 Extractor Assembly

    Comes complete with retaining pin, top hat insert, spring and 'O' ring.

    Black QPQ Finished.

    Made in the USA

    Learn More
  8. 01-UP-762-BOLTEJK : BOLT EJECTOR KIT 308/762

    Replacement .308/7.62 Extractor Assembly

    Comes complete with retaining pin, top hat insert, spring and 'O' ring.

    Made in the USA.

    Learn More
  9. 01-UP-762-CPH : SMOOTHCAM DOMED CAM PIN 308/762 HEAVY

    The CP-R360-H™ Cam Pin has no moving parts to break or lock up.
    Machined from 17-4 PH Stainless Steel and hardened to H900 (45RC Approx) its head is polished for a super smooth finish. The cam pins circular head has a single flat face machined into it at the front so that it can be inserted into any bolt carrier without having to remove the gas key.
    Two further flats are machined at 90 degrees to the front face that assist in reducing internal wear to the cam channel.
    The unique domed head allows the cam pin to operate in a completely different position to a traditional pin, with the radius of the head curving away from the receivers internal surface, rather than forming a hard or sharp edge on its upper corner that causes wear.
    Finished in its natural hardened state, copper/brass color.

    NOTE:  Works on all Mil-Spec BCGs, 308/7.62 ONLY

    Made in the USA.

    Learn More
  10. 01-UP-762-FPIN : FIRING PIN 308/762

    High Quality Replecment .308/7.62 Firing PIn.

    8740 CS Steel

    45-49 HRC, Hard Chrome Plated, MIL-STD-171 1.2.2.4

    Learn More
  11. 01-UP-762-NIB-BA : BOLT ASSMEBLY 308/762 NIB

    Replacement 9310 Steel Bolt Assembly

    Hard Ground Critical Diameters, Heat Treated 15N 89-90.5 Hardness.

    Magnetic Particle Inspected.

    NiB Finished.

    Complete Assembly.

    Made in the USA.

    Learn More
  12. 01-UP-762-NIB-EXKIT : EXTRACTOR KIT 308/762 NIB

    Replacement .308/7.62 Extractor Assembly

    Comes complete with retaining pin, top hat insert, spring and 'O' ring.

    NiB Finished.

    Made in the USA.

    Learn More
  13. 01-UP-762-NIT-BA : BOLT ASSEMBLY 308/762 BLK NIT

    Replacement 9310 Steel Bolt Assembly

    Hard Ground Critical Diameters, Heat Treated 15N 89-90.5 Hardness.

    Magnetic Particle Inspected.

    Black QPQ Finished.

    Complete Assembly.

    Made in the USA.

    Learn More
  14. 01-UP-762-NIT-EBCG : ENHANCED BCG 308/762 BLK NITRIDE

    LANTAC E-BCG®, Enhanced Bolt Carrier Group.

    M16 Full Auto Style for increased mass and lock time.
    Our BCG is precision machined from 8620 Steel with a shot peened bolt manufactured from Carpenter 158 and Magnetically Particle Inspected.

    The entire carrier assembly is QPQ (Quench Polish Quench) Nitride coated Black,this is a specialized type of Nitrocarbrising Case Hardening that creates a vary hard, smooth surface with increased corrosion resistance and low coefficient of friction.
    The carriers patented and patent pending design features unique shrouded and forward facing gas ports that have also been resized so that gas is vented differently to a standard carrier.  This results in a system that runs flatter with a smoother energy pulse with a softer start to carrier movement.

    In addition the system also runs cooler and cleaner, there is also less pressurization of the upper receiver when running a suppressed barrel.  The flared boss at the tail of the carrier enhances the BCG's® position within the buffer tube at the time of cycling and makes it more consistent, resulting in smoother operation.
    All critical dimensions are hard turned / ground after heat treat and the gas key has been hard chrome lined for the best possible wear resistance.

    All E-BCG's® feature the LANTAC CP-R360-H™ patent pending domed head cam pin that is machined from 17-4PH Stainless Steel and hardened to H900 condition (45RC approx).
    The ultra smooth head reduces wear within the upper receiver.
    The BCG's 1Lb 2.1oz weight helps to increase lock time and smoother operation.
    Gas keys are fitted with gasket sealer & are properly staked at four points and only grade 8 fasteners are used in assembly.

    The E-BCG's® forward porting and unique shape assist in reducing pressurization inside the upper receiver that can be caused by short barrel rifles running suppressors.
    However, it should be noted that the E-BCG® is not a complete solution for this issue and all rifles are different. 'Over Gassed' guns will suffer to a larger extent from this problem.

    Learn More
  15. 01-UP-762-NIT-EXKIT : EXTRACTOR KIT 308/762 BLK NIT

    Replacement .308/7.62 Extractor Assembly

    Comes complete with retaining pin, top hat insert, spring and 'O' ring.

    Black QPQ Finished.

    Made in the USA.

    Learn More
  16. 01-UP-SC-NIB-EBCG : ENHANCED BCG 223/556 NIB SIDE CHARGER

    LANTAC E-BCG® DI Side Charger, Enhanced Bolt Carrier Group.

    M16 Full Auto Style for increased mass and lock time.
    Our new BCG is precision machined from 8620 Steel with a shot peened bolt manufactured from Carpenter 158 and Magnetically Particle Inspected.
    The entire carrier assembly is NiB, Electroless Nickel Boron coated with the patented, advanced UCT EXO process, unlike standard NiB coatings.
    This offers extreme lubricity with a friction coefficient of .02 and surface hardness of 82-85 Rockwell C.
    The carriers patented and patent pending design features unique shrouded and forward facing gas ports that have also been re sized so that gas is vented differently to a standard carrier.
    This results in a system that runs flatter with a smoother energy pulse.
    In addition the system also runs cooler and cleaner, there is also less pressurization of the upper receiver when running a suppressed barrel.
    The flared boss at the tail of the carrier enhances the BCG's lock position within the upper and makes it more consistent, resulting in an accuracy improvement.
    All critical dimensions are hard turned / ground after heat treat and the gas key has been hard chrome lined for the best possible wear resistance.
    All E-BCG's® feature the LANTAC CP-R360™ patent pending domed head cam pin that is machined from 17-4PH Stainless Steel and hardened to H900 condition (45RC approx).
    The ultra smooth head reduces wear within the upper receiver.
    The BCG's 11.7oz weight (Excluding Handle) helps to increase lock time and smoother operation.
    Gas keys are properly staked at four points and only grade 8 fasteners are used in assembly.

    The E-BCG's® forward porting and unique shape assist in reducing pressurization inside the upper receiver that can be caused by short barrel rifles running suppressors.
    However, it should be noted that the E-BCG® is not a complete solution for this issue and all rifles are different. 'Over Gassed' guns will suffer to a larger extent from this problem.  

    Learn More
  17. 20434 : SR-15 E3 BOLT ASSY
    Knight‵s Armament Company
    20434 : SR-15 E3 BOLT ASSY
    The SR-15 E3 Enhanced Bolt features a number of components designed to exceed expectations for durability and service life, even when exposed to extreme and unrelenting conditions. It is a proprietary bolt designed specifically for use in SR-15 and SR-16 rifles. Learn More
  18. 30091-1 : SR-15/SR-16 CHROME SAND CUTTER BOLT CARRIER
    Debris channels to allow movement and operation in adverse conditions. Hard chrome finish. Fits KAC SR-15/SR-16 and other AR-15 variants. Carrier Only. Learn More
  19. 30560 : SR-25E2 BOLT ASSEMBLY
    Knight‵s Armament Company
    30560 : SR-25E2 BOLT ASSEMBLY
    KAC - Knight's Armament SR-25 E2 Complete Bolt Assembly. Includes a complete bolt with extractor, ejector and gas rings. Learn More
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