Sons of Liberty Gun Works M4-L89 5.56 NATO AR-15 Rifle - 16" - 30 Round

The Sons of Liberty Gun Works M4-L89 16-inch rifle is SOLGW's premium complete AR-15 — the L89 Drivelock handguard system, Liberty Fighting Barrel, two-stage Liberty trigger, A5 buffer system with A5H2 buffer, and SOLGW's full component specification, ready to run out of the box with one 30-round Gen 3 PMAG included.

The SOLGW M4-L89 16-inch is a complete semi-automatic 5.56 NATO AR-15 rifle built on SOLGW's precision-forged upper and lower receivers, featuring a 16-inch Liberty Fighting Barrel with mid-length gas system, the L89 Drivelock handguard system with 15-inch seven-sided M-LOK rail and integral steel QD cups, a Liberty 2-Stage Trigger at 4.5 lbs, an A5 receiver extension (9-position), A5H2 buffer, stainless steel spring, Liberty Charging Handle, ambidextrous safety selector, Magpul grip and DT stock, and an A2 flash hider. Includes one 30-round Gen 3 PMAG.

The L89 rifle represents SOLGW's uncompromising professional-grade build — every component selected for duty performance and long-term reliability rather than cost minimization. The L89 Drivelock handguard system brings the extended steel barrel nut, internal dowel pin between upper and rail, and integral steel QD cups that distinguish the L89 platform from the EXO3, providing a more mechanically rigid handguard-to-upper connection that minimizes point-of-impact shift for operators running laser aiming modules or VAS systems. The 16-inch Liberty Fighting Barrel with mid-length gas system delivers the full velocity potential of the 5.56 cartridge with a more gradual, consistent gas impulse than carbine-length gas — better cycling consistency across ammunition types and less felt impulse under sustained fire. The Liberty 2-Stage Trigger at 4.5 lbs provides a deliberate first stage and a clean second-stage break appropriate for a duty rifle where trigger discipline matters as much as pull weight. The A5 buffer system with A5H2 buffer manages bolt carrier velocity more effectively than a standard carbine buffer across the wide range of 5.56 loads and gas pressures the rifle may encounter in service. SOLGW's bolt carrier group, built to the same HPT/MPI/shot-peened/full-auto fired standard as their pistol and rifle BCGs, comes assembled in the complete rifle. The ambidextrous safety selector accommodates left-handed operators without modification. One 30-round Gen 3 PMAG ships with the rifle.

Caliber: 5.56 NATO. Barrel: 16-inch Liberty Fighting Barrel, mid-length gas. Rail: SOLGW L89 15-inch, Drivelock barrel nut, integral steel QD cups. Muzzle: A2 flash hider. Trigger: Liberty 2-Stage, 4.5 lbs. Buffer: A5 receiver extension (9-position), A5H2 buffer, stainless steel spring. Charging handle: Liberty. Safety: ambidextrous. Grip: Magpul. Stock: Magpul DT. Includes: one 30-round Gen 3 PMAG.

L89 Drivelock handguard with internal dowel pin and integral steel QD cups provides maximum handguard rigidity for minimal POI shift with lasers and VAS. Liberty 2-Stage Trigger at 4.5 lbs delivers a controlled break for duty accuracy. A5 buffer system with A5H2 manages bolt carrier velocity across the full range of 5.56 loads. SOLGW BCG built to HPT/MPI/full-auto fired standard. One 30-round Gen 3 PMAG included.

The right complete rifle for duty professionals and serious shooters who want SOLGW's full premium component specification in a 16-inch mid-length 5.56 platform — L89 Drivelock handguard, Liberty 2-Stage Trigger, A5 buffer, and a PMAG ready to go.