Bolt Carrier Groups

The heart of a reliable AR-15 build is a quality 5.56 bolt carrier group assembly. These are the same high quality BCG's Angstadt makes for law enforcement and military groups around the world. Machined to mil-spec dimensions and finished in a beautiful...

BCG components are NiB-X coated and polished to reduce fouling adherence. Coating is guaranteed for life against chipping, spalling or flaking. Over 30K rounds in Government protocol endurance testing did not wear the coating off. Especially beneficial...

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Your Bolt Carrier Group is one of the most critical parts of your build. Don't buy an imitation. This is the Spike's Tactical BCG with Nickel Boron Coating. Nickel Boron Coating Inside and Out (Bolt, Carrier, and Gas Key) Laser Engraved with ST...

Just swap this drop in conversion with the bolt carrier group from your 5.56/.223 chambered rifle and you will be ready to shoot .22LR. Ships with Three 25rd 22LR magazines. For best performance use a round style hammer as notched hammers can cause...

High quality components and precise manufacturing make San Tan Tactical parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years of service you can count on.

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...

Noveske marked with a black nitride finish. Carrier features 8620 steel with 158 Carpenter Steel bolt and 9310 tool steel extractor and cam pin. Much more than typical Parkerizing, phosphating or black oxide, Blacknitriding℠ is a thermal chemical...

  5.56 Bolt Carrier Group --Black Phosphate Finish --Mil-Spec --Shot peened & MP tested bolt --Full Auto carrier w/staked carrier key

  The Enhanced Bolt Carrier Group for AR15/M16 platform weapons was designed to minimize carrier tilt and reduce friction inside the upper receiver by relocating key bearing surfaces. All materials, tolerances, and coatings meet or exceed...

  The SureFire OBC is designed to greatly increase the reliability of an M4/M16/AR variant during both unsuppressed and suppressed firing. The OBC comes as a package with the OBC bolt carrer group as well as buffer and buffer spring. This patented...

Stripped carrier is finished in an Ion Bonded Flat Dark Earth. Lowers friction and cleans easier.BCM® (MPI) complete bolt carrier group is fully assembled. (BCG) Bolt carrier group (auto version) for your AR15, M16, or M4. Parkerized exterior and...