Handguard
The Sons of Liberty Gun Works M89 M-LOK Handguard, 15″, features the innovative, patent-pending Drivelock design developed in collaboration with Icon Defense. This design uses three independent wedges that engage with angular grooves in a proprietary barrel nut, providing an exceptionally secure and precise attachment. The system clamps the rail onto the steel barrel nut with extreme force while driving the handguard rearward towards the upper receiver. The slightly larger internal diameter of the extrusion offers more space around the gas block, increased rigidity compared to the M76, and better heat dissipation.
- 18.1 ounces installed with the barrel nut and QD sling mount
- Engraved T-Marks
- Includes Barrel Nut, Barrel Wrench and Lock-Up Components
- M-LOK
- Full length picatinny rail
- 15” total length
Stripped Upper Receiver
Sons of Liberty Gun Works stripped upper receivers are crafted to the highest tolerances while remaining compatible with Mil-Spec parts and other upper receivers. This precision minimizes wobble between receivers, which can impact accuracy. Forged from 7075-T6 aluminum, these AR-15 upper receivers are both strong and crack-resistant, yet lighter than 6061 aluminum. Following the forging process, each receiver undergoes final machining to remove flash marks and ensure tolerances exceed Mil-Spec standards. Each receiver also features their Flag Logo engraved on the tang.
- 7075-T6 Aluminum
- Engraved T Marks
- Engraved Flag Logo
Barrel
The Criterion Hybrid Contour Barrel, 16″, Mid-Length Gas System, .223 Wylde, is a mid-weight barrel designed to strike the perfect balance between weight and barrel material distribution. It provides excellent heat absorption and maintains consistent harmonics. Lightweight enough for comfortable all-day field use, this barrel also delivers exceptional performance under extreme conditions and high rates of fire.
- 1:8 Twist
- Hybrid Contour
- Chrome-lined, phosphate
- .223 Wylde chamber
- Honed and hand-lapped rifling
- Mid-length gas system
- 1/2×28
- 2.05 lbs.
- 4150 CrMoV
- 6 Groove
- 0.750” Gas Block, dimpled for ease of installation and solid lock-up
- Finely polished chambers for reliable extraction and feeding
- Gas hole tuned for proper function with and without suppressor
- Precision-machined barrel extension with M4 feed ramps
Muzzle Device
The Sons of Liberty Gun Works NOX9 XENO muzzle device is a versatile and effective accessory that can be used either as a standalone component or in conjunction with a suppressor using a Xeno adapter. It features a 9-port neutral timing design to minimize recoil and muzzle rise. The NOX9 XENO is finished with a bronze heat-treated coating for enhanced corrosion resistance and durability. It is compatible with 1/2×28 threaded barrels and boasts a lightweight, compact design, measuring 2.18″ x 1″ and weighing just 3.1 oz.
- Use standalone or pair with a suppressor using a Xeno adapter
- Bronze heat-treated finish
- 1/x2x28 thread pitch
- 9 port neutral timing
- 2.18” x 1”
- 3.1 oz
Forward Assist
The Forward Controls Design LSFA (Low Snag Forward Assist) enhances the traditional forward assist by improving its practicality, efficiency, and overall performance. Featuring a smooth top and bottom to reduce snagging, the LSFA also includes an increased plunger surface area for a more solid press, with its pad extending inward. Machined from 4130 steel bar stock and heat-treated with a black nitride finish, the LSFA offers increased corrosion resistance, ensuring durability and longevity.
- Smooth top and bottom to mitigate snagging
- Increased plunger surface area
- Machined from 4130 steel bar stock
- Heat-treated with black nitride finish
- Made in Texas, USA
Gas Block
For long-term durability and precise tolerances, the gas block from Forward Controls Design is an excellent choice for your next build. Machined from high-strength 4140 chrome moly steel and coated with a military-grade manganese phosphate finish, the GBF (Gas Block Forward Controls) includes several unique features not commonly found in other gas blocks. For high-volume shooters, the gas block has a 3/32 hole at the front, allowing for easy removal of a gas tube that may be stubbornly stuck due to carbon buildup. Additionally, if you opt to pin the gas block to the barrel, the GBF includes bosses on both sides for accurate positioning.
- High strength 4140 chrome moly steel construction
- Tough manganese phosphate finish
- Dual bosses as guides for pinning to the barrel
- 3/32 hole for dislodging stuck gas tubes
- Fits .750″ barrels
Ejection Port Cover
Magpul’s Enhanced Ejection Port Cover offers ease of installation, high durability, and corrosion resistance compared to the standard USGI ejection port cover. Unlike traditional stamped steel covers, which are malleable, prone to corrosion, and require tools for installation, the Enhanced Ejection Port Cover snaps into place effortlessly. There’s no need to remove the handguard or barrel nuts, manage loose springs, or adjust small e-clips. Made from impact-resistant injection-molded polymer, it is both corrosion-resistant and robust, resisting bending or deformation from impacts.
- Durable, injection-molded polymer construction
- Installs easily in seconds
- Corrosion-resistant components
- Will not bend or deform from impacts
- Direct replacement for USGI ejection port cover
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