Sons of Liberty Gun Works M4-L89 5.56 NATO AR-15 SBR - 11.5" - 1x 30rd Mag - Short Barrel Rifle

The Sons of Liberty Gun Works M4-L89 11.5-inch SBR brings the L89 Drivelock platform's precision-oriented construction to a short-barreled rifle configuration — forged mil-spec receivers, Liberty Fighting Barrel, Drivelock handguard with integral steel QD cups, and an A2 flash hider in a complete, test-fired 5.56 NATO package. NFA short-barreled rifle — Form 4 transfer required.

The SOLGW M4-L89 11.5-inch SBR is a complete short-barreled rifle chambered in 5.56 NATO, built on SOLGW's forged mil-spec upper and lower receivers with the L89 Drivelock handguard system. Features an 11.5-inch Liberty Fighting Barrel, 4140 steel gas block with nitrided gas tube, seven-sided M-LOK handguard with integral steel QD cups at the barrel nut on both sides, A2 flash hider, SOLGW BCG, and Liberty Charging Handle. Test fired before shipment. Classified as an NFA short-barreled rifle — transfer requires ATF Form 4 approval.

The 11.5-inch barrel configuration produces a compact overall package well-suited for patrol, vehicle operations, and close-quarters applications where a standard carbine's length creates a handling disadvantage — while retaining 5.56 NATO's terminal performance at the distances where a short-barreled rifle is realistically deployed. The A2 flash hider provides excellent flash mitigation. The L89 Drivelock barrel nut system, internal dowel pin between the upper receiver and handguard, and anti-rotation tabs together minimize the micro-movement at the upper-to-handguard interface that causes point-of-impact shifts when a laser aiming module or other VAS system is rail-mounted — a meaningful construction advantage for an SBR likely to be used with a compact laser aiming system. Integral steel QD cups at the barrel nut on both sides provide hardened sling attachment points without separate hardware. The Liberty Fighting Barrel and 4140 gas block are SOLGW's standard upper components, assembled to their full rifle standards. BCG and Liberty Charging Handle are included — this is a complete, ready-to-transfer SBR.

Caliber: 5.56 NATO. Barrel: 11.5 inches, Liberty Fighting Barrel. Rail: L89, seven-sided M-LOK, Drivelock barrel nut, integral steel QD cups both sides. Gas block: 4140 steel, nitrided gas tube. Muzzle: A2 flash hider. BCG: SOLGW. Charging handle: Liberty. Receivers: forged mil-spec. Finish: black. Test fired before shipment. NFA: SBR — Form 4 transfer required.

L89 Drivelock three-point lockup minimizes POI shift for attached lasers and VAS systems. Compact 11.5-inch barrel optimized for close-quarters and vehicle use. Complete rifle — BCG and charging handle included, test fired before shipment.

The right compact SBR for duty, patrol, and close-quarters use — SOLGW's L89 Drivelock platform in an 11.5-inch 5.56 configuration. complete and test fired. NFA item — Form 4 required.