In the world of firearms, reliability is paramount. The Rosco Phosphate Bolt Carrier Group (BCG) stands as a testament to this principle, crafted with precision and purpose for both the modern-day carbine shooter and military professionals alike.
This BCG is engineered for 5.56 and 300 BLK platforms, showcasing a robust phosphate coating that ensures durability under rigorous conditions. Its chrome-lined gas key and bolt channel are not mere embellishments; they are essential enhancements designed to deliver consistent performance over time.
The collaboration with Microbest underscores Rosco's commitment to quality—ensuring each component meets stringent MIL-SPEC standards. This partnership guarantees that every round fired results in dependable operation, whether on the range or in demanding environments.
A properly staked gas key further solidifies its reliability profile, while the shot-peened and magnetic particle tested matched bolt promises extreme accuracy. The upgraded extractor offers seamless function through countless cycles of use.
Built to endure full-auto rated firepower, this BCG is made for those who demand nothing short of excellence from their equipment. It’s more than just another component; it’s an assurance that when you need it most, your firearm will perform without fail.
Features
- carrier material: 8620 steel
- gas key: 4130 steel, attached with grade 8 hardware, properly staked
- cam pin: hardened 4340 steel
- firing pin: 8740 steel, heat treated, mil-spec, center-less ground, hard chrome plated
- bolt material: c158, , phosphate coated, mpi/hpt
- extractor: 4140 steel, heat treated, shot peened
- ejector: s2-s7 tool steel, shot peened
- phosphate/chrome bcgs ship with upgraded sprinco extractor kit