One Horse M16 .223/5.56 Bolt Carrier Group - Black Nitride

One Horse M16 .223/5.56 Bolt Carrier Group - Black NitrideThe One Horse M16 .223/5.56 Bolt Carrier Group is built for shooters who want dependable function, long-term durability, and straightforward compatibility in an AR-15 platform. Designed for 5.56 NATO, .223 Remington, and .300 Blackout setups, this BCG delivers smooth cycling, consistent extraction, and reliable performance across a wide range of rifle builds.This carrier group uses a 9310 tool-steel bolt paired with an 8620 AQ steel carrier, along with full Mil-Spec heat treatment and magnetic particle inspection to provide added confidence in material strength and quality control. One Horse also includes practical reliability features such as chamfered lug backs, an extractor spring with insert and O-ring installed, an S7 extractor, and a properly staked gas key with Grade 8 fasteners.A salt-bath nitride finish is applied to the bolt, carrier, and cam pin to improve wear resistance, corrosion resistance, and ease of maintenance. With forward assist serrations, full-auto profile compatibility, and all-USA materials and manufacturing, this is a rugged upgrade for builders who want a hard-use M16-style bolt carrier group without unnecessary extras.Features Compatible with .223 Remington, 5.56 NATO, and .300 Blackout platforms 9310 tool steel bolt for strength and durability 8620 AQ steel carrier Full Mil-Spec heat treatment Magnetic particle inspected (MPI) Back of lugs chamfered for improved reliability Extractor spring, insert, and O-ring installed S7 extractor Salt bath nitride finish on the bolt, carrier, and cam pin Properly staked gas key with Grade 8 fasteners Full-auto compatible profile Forward assist serrations Made in the USA with USA-sourced materialsSpecifications Product Type: M16 bolt carrier group Compatibility: .223 Remington / 5.56 NATO / .300 Blackout Bolt Material: 9310 tool steel Carrier Material: 8620 AQ steel Extractor Material: S7 Finish: Salt bath nitride Inspection: Magnetic particle inspection (MPI) Heat Treatment: Full Mil-Spec heat treatment Gas Key: Properly staked with Grade 8 fasteners Profile: Full-auto compatible Serrations: Forward assist serrations Manufacturer: One Horse Country of Origin: USA