Sons of Liberty - Scalper 5.56 Bolt Carrier Group MPI

The Scalper BCG by Sons of Liberty Gun Works is the evolution of the industry’s most trusted mil-spec bolt carrier group—now upgraded with Forward Controls Design’s OCKS (Optimized Carrier Key Screws). Designed for hard-use rifles, duty weapons, and high-round-count builds, the Scalper delivers uncompromising performance and long-term durability in a premium, battle-tested package.

• Carpenter 158 Bolt: Precision machined, heat-treated, shot peened, high pressure (HP) tested, and magnetic particle inspected (MPI)—deep laser engraved with SP/HP/MP markings.
• OCKS Gas Key Screws: Hardened, torqued, staked, and sealed screws from Forward Controls Design offer superior gas key retention under extreme use.
• Full Auto Profile Carrier: Made from aircraft-grade 8620 steel, hard chrome lined, and phosphate finished. Gas key chrome-lined and Permatex sealed.
• Premium Internal Components: Sprinco 5-coil extractor spring, cryo-treated, with S7 tool steel ejector and extractor, 8640 chrome-plated firing pin.
• Individually Tested: Each unit is full-auto test fired, HP tested, and MPI inspected—ensuring you receive a zero-compromise, field-ready bolt carrier group.
• Scalper Edition Branding: Features the exclusive Scalper logo laser-engraved on the carrier body.

Perfect For:

• Hard-use AR-15 builds
• Law enforcement and duty rifles
• High-round-count training or competition rifles
• Shooters who value mil-spec with enhanced durability

Made in the USA. Backed by SOLGW's uncompromising reputation for quality and performance.