Odin Works AR-15 .223 Bolt Carrier Group

The Odin Works® AR-15 .223 Bolt Carrier Group (BCG) is a Mil-Spec BCG that's designed for smooth and proper function with your rifle. The Type 2 bolt face features case hardened 8620 steel construction with a corrosion-resistant black nitride coating that minimizes the need for lubricants. The gas key is constructed with 4130 steel and is attached with Grade 8 hardware and properly staked into a milled "valley" for proper positioning. The cam pin is hardened 4340 steel and the firing pin is 8740 steel and is center-less ground and hard chrome coated. The bolt is case hardened 9310 steel and the bolt assembly features true Mil-Spec dimensions and external surfaces are CNC ground after heat treatment for a precision fit. The extractor is 4340 steel and this BCG is Magnetic Particle Inspected (MPI) and High Pressure Tested (HPT). Made in USA.