Circle Square Firearms sells firearms, ammunition, and related products. You must be at least 18 years of age to enter.
Some products and transactions may require additional verification and a higher minimum age (21 for handguns under federal law).
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Build a compact hard-hitting .300 Blackout rifle with this 10.5″ Pistol Gas Barrel. Chambered for .300 Blackout with a 1:7 twist rate this barrel ensures optimal stabilization for both subsonic and supersonic rounds delivering precision for tactical hunting or suppressed applications. The pistol-length gas system provides smooth cycling and reduced recoil while the premium nitride finish enhances corrosion resistance durability and ease of maintenance. Crafted to Mil-Spec standards it’s the perfect foundation for a high-performance AR15 pistol or SBR.
