White Label Armory M16 Bolt Carrier Group Features The White Label Armory M16 Bolt Carrier Group is machined to full M16 specifications giving it the auto sear notch profile that factory pattern AR-15 and M16 platform rifles are built around. Its billet machined extractor is cut from solid bar stock rather than cast or metal injection molded which produces a tighter more consistent part that grips the case rim firmly through every cycle. Reliable extraction is the foundation of a reliable semi-automatic rifle and a precision extractor reduces the odds of a stuck or torn case under hard use. This carrier group is built as a drop in replacement for AR platform rifles chambered in 5.56 NATO. A black nitride finish coats the entire bolt carrier group a surface treatment that increases hardness resists corrosion and lowers friction compared to a basic phosphate finish. That lower friction translates into smoother cycling and easier cleaning after a day at the range since fouling has less opportunity to bond to the surface. Made in the USA the White Label Armory M16 Bolt Carrier Group gives builders and owners a durable precision component they can trust to run hard without excessive maintenance between range trips. White Label Armory M16 Bolt Carrier Group Specifications Manufacturer: White Label Armory Model: M16 Bolt Carrier Group Caliber: 5.56 NATO Color: Black Finish: Nitride Firearm Fit: AR15 / M16 Extractor: Billet Country of Origin: USA Available At: GrabAGun