AU LR308 DPMS Bolt Carrier Group - Nickel Boron
(1) AU LR-308 Bolt Carrier Group - Nickel Boron, used 20rds (downgraded to phosphorus bolt to sell rifle for less) Excellent condition. $160 shipped.
Payment via USPS Money Order or PP gift.
The AU BCG Bolt Carrier Group coated in Nickel Boron for your DPMS / Knights Armament .308 / 7.62x51 AR10 style rifles and was created to meet and exceed all Mil Spec standards. Compatible with semi-auto and full-auto receivers. The bolts are MPI tested & Marked to give you ultimate confidence in your weapon system.
Treated Nickel Boron finish produces an exceptionally hard surface that’s 40% more wear resistant than chrome plating, with an ultra-low friction coefficient. The surface is harder than the substrate underneath and will not peel, flake, gall, or rub off. Our treated Nickel Boron finish bolt carrier groups have been tested to function reliably without additional lubrication up to 50,000 rounds. Reduced friction also means less heat generated by metal-on-metal contact, so the gun runs cooler and parts last longer.
100% Made in the USA
Mil-spec Carpenter No. 158® steel
Nickel Boron plating
HPT Bolt (High Pressure Tested/ Proof)
MPI Bolt (Magnetic Particle Inspected)
Shot Peened Bolt
Chrome Lined Carrier (AUTO)
Chrome Lined Gas Key
Gas Key Hardened to USGI Specifications
Grade 8 Hardened Fasteners
Key Staked Per Mil-Spec
Tool Steel Extractor
Mil-Spec Crane O-Ring