American Tactical Imports ATIG15MS556QD7B 5.56 NATO 7.5" 31-Round Carbine

The American Tactical Imports ATIG15MS556QD7B 5.56 NATO 7.5" carbine delivers compact firepower for tactical operators, home defense, and law enforcement applications where maneuverability matters. This short-barreled rifle (SBR) platform excels in confined environments—vehicle operations, building entries, and close-quarters scenarios—where a full-length carbine creates handling liability. The 7.5" barrel provides sufficient velocity for duty-grade 5.56 performance while maintaining the rapid target acquisition and ergonomic control that define modern patrol carbines.

Built on proven AR-15 architecture, the ATIG15MS556QD7B features a quick-detach (QD) mount system for rapid optic changes and accessory modularity—critical in multi-mission environments where equipment swaps occur under operational pressure. The 31-round magazine capacity ensures sustained firepower during extended engagements, while the compact 28.2-inch overall length and 6.95-pound weight reduce fatigue during extended carry and enable one-handed control in vehicle or tactical positions. The 5.56 NATO chambering provides NATO-standard ammunition compatibility, giving operators worldwide supply-chain consistency and ballistic predictability across duty and training cycles.

Law enforcement SWAT teams, corrections tactical units, and armed civilians requiring home-defense capability benefit most from this platform's balance of power and portability. SBR registration and compliance with local NFA regulations are mandatory before possession; operators must maintain valid tax stamp documentation and adhere to state-specific transfer requirements. The AR-15-compatible design ensures seamless integration with standard furniture, optics, and accessories already in most tactical inventories, eliminating the need for specialized parts sourcing. Proper maintenance—regular cleaning of the short gas tube system and inspection of the QD mount—ensures reliability in high-round-count training and duty use.