Out of stock
SKU: Q-ACC-AR-BCG-2PC
UPC: 850035705841
MPN: ACC-AR-BCG-2PC
The Q AR-15 Two Piece BCG represents a departure from conventional bolt carrier group design, built for shooters who prioritize field serviceability alongside duty-grade reliability. This two-piece configuration separates the bolt from the carrier body using a single retention pin, enabling rapid disassembly without tools for cleaning and inspection. Chambered for 5.56x45mm NATO with full compatibility across 300 Blackout and .223 Remington platforms, this BCG serves law enforcement, military, and competitive rifle applications where downtime costs matter. We stock this alongside our complete selection of bolt carrier groups for AR-pattern rifles.
Q engineered the front end from maraging stainless steel with a black nitride finish, delivering exceptional hardness and corrosion resistance that outperforms standard Carpenter 158 steel in demanding environments. The rear carrier section uses heat-treated stainless steel for optimal wear characteristics. A relief cut on the front end helps reduce bolt bounce during cycling, promoting consistent lockup and improved accuracy potential. The complete assembly includes a mil-spec gas key with proper staking, mil-spec bolt, cam pin, and firing pin. This attention to mil-spec critical components ensures drop-in compatibility with standard AR-15 upper receivers while maintaining the reliability standards professionals expect from their BCG components.
Operators running suppressed rifles or high round count training courses will appreciate the two-piece design's maintenance advantages. Carbon buildup that typically requires extensive soaking and scrubbing becomes accessible with simple pin removal, cutting cleaning time significantly. The modular approach also simplifies parts replacement—swap a worn bolt without replacing the entire carrier assembly. For shooters building or upgrading AR-15 platforms, pair this BCG with quality charging handles and lower parts kits from our parts department for a complete rifle build.
The Q Two Piece BCG separates into two distinct parts—the bolt assembly and carrier body—secured by a single retention pin. This allows tool-free field disassembly for thorough cleaning and component inspection, reducing carbon buildup issues common in traditional one-piece designs.
This BCG is chambered for 5.56x45mm NATO and maintains full compatibility with 300 Blackout and .223 Remington when paired with appropriate barrels and magazines. It functions with any standard AR-15 upper receiver using a 1913 Picatinny rail interface.
The front end is machined from maraging stainless steel with a black nitride coating for hardness and corrosion resistance. The rear carrier section uses heat-treated stainless steel. Both materials exceed standard mil-spec durability requirements.
Yes. The two-piece design actually benefits suppressed rifle operation, where increased back pressure accelerates carbon fouling. The simplified disassembly allows more frequent and thorough cleaning to maintain reliable cycling under suppressed conditions.
No special tools are required. The single retention pin design allows complete disassembly by hand for field cleaning. The mil-spec gas key, bolt, cam pin, and firing pin all use standard AR-15 dimensions for compatibility with existing armorer tools.
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