Bolt Carrier Groups

Front Sight Kit Includes: Front sight post A2 - square Front sight spring Front sight detent

This 6MM ARC Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most Mil-Spec upper receivers chambered in 6MM ARC. All critical parts are coated with EXO Nickel Boron Technology that provides permanent dry lubricity, extreme...

Introducing true unparalleled innovation..   The Two-Piece Bolt Carrier Group.   No matter how hard we tried, we simply could not get the quality BCG we needed in our systems, so we not so simply made our own. Most BCG's on the market...

LBE Unlimited Crush Washer - 5.56 ARCW-556 LBE Unlimited crush washer for 556 NATO chambered AR.

DD 5.56mm Bolt Carrier Group, Complete, F/A, HP & MPI Tested Daniel Defense 5.56 NATO (5.56x45mm & .223 Remington) / 300 Blackout (7.6x35mm) full-auto compatible, M16 Profile, complete bolt carrier group assembly. CARRIER Machined from 8620...

Bootleg, Four Position Adjustable Carrier, AR-10, Complete, Black Finish (No Bolt)  

The 2A Armament AR10 Full Mass Carrier (FMC) was designed and manufactured as a high-quality, full mass bolt carrier group for LR-.308 DPMS style rifles. We manufacture the carrier and bolt in-house to ensure fit and function...

LanTac USA -  Bolt Carrier Group, Nickel Boron Coated, 308WIN E-BCG This DPMS Style 308 BCG is precision machined from 8620 Steel with a 9310 Precision Hard Ground Bolt. The entire carrier assembly is NiB, Electroless Nickel Boron coated with the...

TRIARC Systems Milspec AR15/M16 BCG - NP3 FULL AUTO RATEDMaterial: Case Hardened 8620 SteelFinish: NP3Gas Key: 4140 Steel, attached with Grade 8 hardware and properly stakedCam Pin: Hardened 4140 cam pinFiring Pin: 17-4...

DESCRIPTION The Aero Precision EPC/AR9 Bolt is the core of your EPC build. Machined from 8620 steel and featuring a nitride finish, fracture resistant grade 23 titanium pin, and 4140 steel extractor, the EPC bolt assembly is precision...

The 2A Armament AR10 Titanium Regulated Bolt Carrier Group is an excellent option for running a large frame rifle with or without a suppressor all while saving an incredible amount of weight. With the ability to regulate your AR10 gas system, you are...

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...