Lead & Steel ARC Grit Cutter Bolt Carrier Group 5.56x45mm/.300 AAC Blackout, Black

The All Rounder Carbine Grit Cutter Bolt Carrier Group (ARC BCG) is a precision engineered component that stands out with its individually proof tested and mag particle inspected bolt. The inner diameter of the bolt carrier is machined to tighter tolerances than competitor offerings, ensuring optimal performance. The carrier is gas nitrided before receiving a DLC (diamond like carbon) finish, significantly enhancing its durability. This process creates a Just Right gas seal inside the carrier, improving gas efficiency and extending service life. While most M16 BCG manufacturers do not compensate for the lack of chrome plating in a TDP bolt carrier, our tight tolerance machining makes up for that gap. The Grit Cutter BCG is designed with machined debris channels, extended carrier stability rails and belly relief cuts to facilitate smooth magazine insertion even when loaded. The bolt itself is crafted from Crucible Carpenter 158 deg F steel, shot peened for increased durability and individually proof tested for long term reliability. The chrome lined gas key is sealed against the carrier using Permatex gasket sealant and secured with OCKS fasteners at 53 in/lb to ensure a tight, leak free fit. Our extractors are billet machined from 4140 steel, manganese phosphate coated for enhanced grip on the casing rim and feature genuine Sprinco 5 coil extractor springs with a rubber insert for added reliability and longevity. This comprehensive design ensures the ARC BCG provides superior performance and durability for your AR platform. Carrier belly scalloped relief cuts designed to assist with smoother loaded magazine insertion, ensuring quicker and easier magazine changes during high-pressure situations Extended rails for enhanced carrier stability during cycling, providing smoother operation and reducing wear for improved reliability The machined sand cuts reduce granular resistance between the upper receiver contact surfaces for smoother operation 8620 M16 carrier with a tighter interior diameter for TiN case depth, ensuring improved durability, reduced friction and enhanced overall performance The shot-peened C158 bolt is individually proof tested for enhanced strength and reliability Machined debris channels for improved reliability, allowing for efficient removal of dirt and debris, ensuring smooth operation even in adverse conditions It is coated with diamond-like carbon The machined extractor is installed with an insert and a Sprinco 5 coil spring for enhanced performance and reliability Serrated OCKS fasteners for a secure and tight grip Laser-engraved with the LS insignia, adding a touch of style and personality to your gear