SOLGW M4-89
Sons of Liberty Gun Works · Carbine · In Production · 2022
Overview
The SOLGW M4-89 (also marketed as the L89 Fighting Rifle) is one of Sons of Liberty Gun Works' flagship offerings, built around the M89/L89 Drive Lock free-float M-LOK handguard system that locks rigidly to an extended steel barrel nut to minimize point-of-impact shift. It uses precision-forged upper and lower receivers, the SOLGW Liberty Fighting Barrel, an enhanced A5-length buffer system, the renowned SOLGW bolt carrier group, a Liberty ambidextrous charging handle, the Liberty 2-Stage (L2S) trigger, and an ambidextrous selector, finished with Magpul grip and DT stock. The handguard features 7-sided M-LOK slots and integral steel QD cups at 10 and 2 o'clock. Offered in 9-inch, 10.5-inch, 11.5-inch, 13.9-inch, 14.5-inch, 16-inch, and 18-inch barrels and in 5.56 NATO, .300 Blackout, 6.5 Grendel, and 6mm ARC.
Specifications
| Weight (empty) | 3221 g (113.6 oz) |
| Weight (loaded) | 3711 g (130.9 oz) |
| Overall Length | 914 mm (35.98") |
| Barrel Length | 406 mm (15.98") |
| Action Type | Gas Operated Direct Impingement |
| Firing Mechanism | Hammer Fired |
| Trigger Type | Two Stage |
| Trigger Pull | 20 N (4.5 lbf) |
| Magazine Capacity | 30 rounds |
| Magazine Type | Detachable Box |
| Muzzle Velocity | 930 m/s (3051 fps) |
| Muzzle Energy | 1730 J (1276 ft·lbf) |
| Effective Range | 500 m (547 yd) |
| Maximum Range | 3600 m (3937 yd) |
| Barrel Rifling | Right Hand |
| Rifling Twist | 178 mm (7.01") |
| Number of Grooves | 6 |
| Frame Material | Aluminum Alloy |
| Barrel Material | Steel |
| Stock Material | Polymer |
| Finish | Qpq Nitride |
Calibers
- 5.56x45mm NATO · primary · 5.56x45mm NATO — also known as 5.56mm NATO, 5.56x45mm, .223 Remington
Features
- Firing modes: Semi Automatic
- Feed systems: Detachable Box Magazine
- Safety mechanisms: Manual Safety Selector
- Features: Free Floating Handguard, M Lok Attachment, Drive Lock Rail, Mid Length Gas System, Qpq Nitride Barrel, Carpenter 158 Bolt, Hpt Mpi Tested, Ambidextrous Charging Handle, A5 Buffer System, Two Stage Trigger, Extended Barrel Nut, Flat Top Receiver, Picatinny Rail, Rotating Bolt, Integral Qd Mounts
Variants
- SOLGW M4 L89 Pistol 11.5" — Pistol
- SOLGW M4-89 13.7" P&W — Pinned Welded
- SOLGW M4-89 14.5" P&W — Pinned Welded
- SOLGW M4-89 Match 18" — Precision
Production
Production years: 2022-present
Continuous production for civilian, law enforcement, and military markets
Origin
Country of origin: United States
Notes
MSRP around $1,999 for the 16-inch 5.56 rifle. The L89 Drive Lock handguard uses anti-rotation tabs and a stainless steel pin connecting the upper and handguard for superior lockup. Available as rifle, SBR, or pistol-brace configurations. Lifetime warranty.
Background
The L89 platform marked SOLGW's move into precision-capable fighting rifles, pairing duty-grade reliability with the rigidity needed for consistent accuracy off bags and barricades.