AR15 BCG | 5.56 | INDUSTRY ARMS | Nickel Boron
AR-15 REDUCED FRICTION NICKEL BORON (NIB) BOLT CARRIER GROUP
Industry Armaments new Reduced Friction Nickel Boron Bolt Carrier Group utilizes strategically located bearing surfaces to reduce carrier contact and friction. By adding in machined lubrication channels and surfaces in addition to the minimal bearing surfaces, reliability is increased immensely.
Our new Reduced Friction Nickel Boron BCG utilizes strategically located bearing surfaces to reduce carrier contact and friction. By adding in machined lubrication channels and surfaces in addition to the minimal bearing surfaces, reliability is increased immensely.
A slight increase in weight also ensures proper dwell time and extraction. A case hardened 8620 steel carrier with an advanced low friction Nickel Boron coating is the base for this BCG.
We used a fully machine 4130 steel gas key instead of a MIM key like a majority of manufacturers, and then used grade 8 hardware with proper staking to attach it the a machined channel for proper locating and zero chance of movement. A case hardened 4340 cam pin holds in the shot peened, case hardened 9310, and Nickel Boron coated bolt.
The bolt is Mil-STD-1816 HPT and MPI tested and includes a crane O-ring on the shot peened case hardened 4340 steel Nickel Boron coated extractor. A milspec firing pin made from centerless ground 8740 steel that is hard chrome coated, takes care of the primer ignition.
Every single piece of this BCG went through a level of scrutiny that is rarely given in order to bring you the best BCG out there. Proudly made in the USA.
- Mil-STD-1816 HPT and MPI tested
- 4130 steel gas key
- Case hardened 4340 Cam Pin
- Crane O-ring on 4340 case hardened extractor
- MADE IN THE USA
We Also Recommend