Solgw M4 L89 Bs 13.7" Hux 5.56 Blk

The Sons of Liberty Gun Works M4 L89 BS 13.7" 5.56 Black is a semi-automatic rifle engineered for operators who demand precision, reliability, and compliance in a compact package. The 13.7-inch barrel is permanently pinned and welded to achieve a 16-inch overall length, meeting federal legal requirements while maintaining the ergonomic advantages of a shorter sight radius and reduced weight. This configuration places it at the sweet spot between maneuverability and velocity retention in the 5.56 NATO round.

The midlength gas system moderates cyclic rate and reduces felt recoil compared to carbine-length designs, resulting in flatter shooting characteristics and faster target reacquisition. The barrel is crowned with a Huxwrx Flash Hider, a recognized suppressor-ready solution that controls muzzle signature whether suppressed or unsuppressed. The rifle ships with a Liberty Fighting Trigger—a known upgrade from stock mil-spec designs—and a B5 Systems grip that provides superior ergonomics and texture. The 30-round magazine and black Cerakote finish round out a purpose-built platform ready for serious use.

This rifle is purpose-built for law enforcement patrol, home defense, and precision-focused training scenarios where a shorter overall package does not sacrifice ballistic or terminal performance. The pinned 13.7-inch configuration allows standard-capacity magazines while remaining within regulatory parameters. Operators familiar with Sons of Liberty Gun Works understand the brand's commitment to fighting-grade components and attention to detail—each rifle ships as a complete, tested system ready for duty.

The 5.56 NATO cartridge remains the standard across military, law enforcement, and civilian tactical communities, ensuring ammunition availability and interoperability across platforms. This rifle delivers proven performance in a proven caliber, backed by a manufacturer with earned credibility in the precision rifle market.