SOLGW M4-76
Sons of Liberty Gun Works · Carbine · In Production · 2021
Overview
The Sons of Liberty Gun Works M4-76 is the company's flagship duty-grade AR-15 carbine, built to deliver combat reliability at an accessible price point. It is built around a 16-inch 4150 chrome-moly-vanadium steel barrel with a 1:7 six-groove twist optimized for heavy 5.56 NATO loads, finished inside and out with QPQ nitride for corrosion resistance. The mid-length gas system and conservative gas port sizing give it a soft, controllable recoil impulse. The M4-76 carries SOLGW's M76 Wedge Lock free-float M-LOK handguard, a steel barrel nut, the Liberty Fighting Trigger, an ambidextrous Raptor-LT charging handle, and a VLTOR A5 buffer system, with B5 Systems grip and Bravo stock furniture. Available in 10.5-inch, 13.7-inch pinned, 13.9-inch pinned, and 16-inch barrel configurations.
Specifications
| Weight (empty) | 3175 g (112.0 oz) |
| Weight (loaded) | 3665 g (129.3 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 | Single Stage |
| Trigger Pull | 24 N (5.4 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, Wedge Lock Rail, Mid Length Gas System, Qpq Nitride Barrel, Carpenter 158 Bolt, Hpt Mpi Tested, Ambidextrous Charging Handle, A5 Buffer System, Flat Top Receiver, Picatinny Rail, Rotating Bolt
Variants
- SOLGW M4-76 10.5" — Short Barrel
- SOLGW M4-76 13.7" P&W — Pinned Welded
- SOLGW M4-76 13.9" P&W — Pinned Welded
Production
Production years: 2021-present
Continuous production for civilian, law enforcement, and military markets
Origin
Country of origin: United States
Notes
MSRP roughly $1,200-$1,400 depending on configuration. The M4-76 ships in a soft case with three OKAY Industries SureFeed 30-round magazines. The '76' designation references 1776 and the M76 Wedge Lock rail. Carries SOLGW's lifetime warranty. Sold primarily through dealers; SOLGW also offers the M4-76 as an upper receiver group and the wedge lock rail separately.
Background
Sons of Liberty Gun Works was founded in San Antonio, Texas, and built its reputation test-firing every rifle on a full-auto machine gun lower for function before it ships. The M4-76 became the brand's gateway fighting rifle and a frequent recommendation for shooters wanting USGI-grade reliability without boutique pricing.