Sons of Liberty Gun Works M4-exo3 5.56 Urg

Sons of Liberty Gun Works M4-EXO3 5.56 Upper Receiver Group

The M4-EXO3 is the latest iteration of the EXO series rifles, designed for duty, service, and defense. This third-generation rifle incorporates several upgrades and refinements to enhance its performance and durability.

Specifications

The M4-EXO3 features a 5.56 NATO chamber with a 4150CrMoV (Chrome Moly Vanadium per MIL-B-11595E) barrel. The barrel is coated with a QPQ corrosion-resistant finish and has a 1/7 twist six-groove rifling. The gas block is designed with a .750" gas block journal and a gas port that is appropriately sized. The barrel extension is QPQ-coated and features a M4 feed ramp.

Features

The M4-EXO3 incorporates several third-generation upgrades, including a 4140 steel barrel nut, an updated proprietary lockup with a custom 4140 set screw, and an anti-rotation pin from the M76/M89. These features provide improved stability and reliability. The rail system has been modified to include slight finger grooves, similar to those found on the M76/M89, and the lightening holes have been spaced out to stiffen the rail.

Performance

This rifle is built to require minimum maintenance for years, ensuring that it remains reliable and effective throughout its lifespan. The QPQ corrosion-resistant finish ensures that the rifle can withstand harsh environments without compromising its performance.

Design

The M4-EXO3 comes in various barrel lengths to suit different needs, including 10.5", 11.5", 13.7", and 16". Each barrel length is designed for a specific gas system and muzzle device, ensuring that the rifle maintains optimal performance. The 13.7" barrel, for example, uses a mid-length gas system with a P/W Nox and B5 stock, while the 16" barrel uses a mid-length gas system with an A2 muzzle device and B5 stock.

Components

• Barrel: Sons of Liberty Gun Works 4150CoMOV 1:7 MPI HPT Barrel
• Caliber: 5.56 NATO Chamber
• Barrel Steel: 4150 CrMoV
• Twist Rate: 1/7 Twist Six Groove
• Thread Pitch: 1/2-28 Threaded Muzzle
• Gas Block: .750" Gas Block Journal with appropriately sized gas port
• Weight: 25 Ounces
• Barrel Finish: QPQ Corrosion Resistant Finish
• Barrel Extension: QPQ coated M4 Feed Ramp Extension

Conclusion

The M4-EXO3 from Sons of Liberty Gun Works offers a superior performance without compromising on durability and reliability. Its third-generation features and specifications make it an excellent choice for a variety of applications, from law enforcement to hunting and home defense.