Bolt Carrier Groups

M16 Full Auto Style for increased mass and lock time.This BCG is precision machined from 8620 steel with a shot peened bolt manufactured from Carpenter 158 and Magnetically Particle Inspected. LanTac USA LLC, 556 ENhanced BCG, Gold, TiN...

This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec AR10 upper receivers. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability and increases both...

High quality components and precise manufacturing make Lantac 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 USA LLC,...

Bauer Precision 5.56 Firing Pin Standard Firing Pin for all AR15 platform bolt Carriers.  

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...

  FailZero M16/4 Full-Auto BCG - No Hammer - Nickel Boron EXO This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec M16, M4 or AR15 upper receivers.  All critical parts are coated with EXO Nickel Boron...

  The Knight’s Armament SR-15/SR-16 Chrome Sand Cutter Bolt Carrier comes with grooves machined into the carrier, to allow for free movement and operation in extremely adverse conditions.  Similar in concept to the sand cutting...

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

Roller Cam Pin with modified Gas Key for direct impingement-type rifles. Patriot Ordnance Factory, Roller Cam Pin Kit, For 223/AR15, Black Fits .223/5.56 For Direct Impingement-Type Rifles

  2A Armament Lightweight Bolt Carrier The 2A Armament Lightweight Bolt Carrier (LBC) is a lightweight carrier solution for those looking to reduce both felt recoil, and over all weight of the AR-15 pattern rifle. The LBC combines a very...

2A Armament, Bolt Carrier Group, Titanium Regulated Bolt Carrier Group, AR Platfrom, Black Finish Grade 5, 6AL-4V Titanium QPQ Nitride Staked Screws Adjustable Gas Regulator The Titanium Regulated Bolt Carrier (RBC) is an ultra-lightweight...

This 9mm AR Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most 9mm AR platform rifles and pistols. The FailZero 9mm BCG is compatible with both lowers designated for Glock or Colt magazines. All critical parts are coated with EXO...