Sons of Liberty Gun Works M4-L89, 5.56 NATO, 11.5" Barrel, 1-30rd Magazine, Pistol

Built with the professional end user in mind, the SOLGW M4-L89 delivers a duty-grade platform engineered for reliability, durability, and real-world performance. This 11.5-inch configuration strikes an ideal balance between compact maneuverability and effective ballistic performance, making it well-suited for defensive use, training, and hard-use applications. Every component is purpose-driven, reflecting SOLGW’s commitment to building rifles that perform when it matters most.

The M4-L89 is centered around SOLGW’s Liberty Fighting Barrel, designed to deliver consistent accuracy and long-term durability under demanding conditions. Paired with a carbine-length gas system, it ensures reliable cycling across a wide range of ammunition. The L89 Drivelock Handguard system enhances rigidity and mounting capability, featuring a 7-sided M-LOK interface and integrated steel QD sling cups for secure attachment points. An extended steel barrel nut further reinforces the system, creating a solid lockup that supports accuracy and durability. SOLGW’s A5-length buffer system is a standout feature, offering improved recoil impulse and smoother cycling compared to traditional setups—especially beneficial in shorter-barreled configurations. Internally, the rifle is equipped with premium components including a Liberty 2-stage trigger for a clean, consistent break, a robust bolt carrier group, and an ambidextrous safety for versatile operation. Finished with an SB Tactical brace and B5 grip, the M4-L89 is built for control, adaptability, and professional-grade performance. Each rifle is individually built, test-fired, and backed by a lifetime warranty with critical use replacement, underscoring SOLGW’s confidence in their platform.

Specifications:

• Caliber: 5.56 NATO
• Barrel Length: 11.5" (SOLGW Liberty Fighting Barrel)
• Gas System: Carbine-length
• Capacity: 30 rounds (1 magazine included)
• Handguard: SOLGW L89 10.75" Drivelock Rail (M-LOK)
• Receiver Set: SOLGW forged upper and lower
• Trigger: Liberty 2-Stage (~4.5 lbs)
• Buffer System: A5 Receiver Extension (9-position) with A5H2 buffer and spring
• Muzzle Device: A2 flash hider
• Charging Handle: SOLGW Liberty Charging Handle
• Controls: Ambidextrous safety selector
• Use Case: Duty, defense, training, professional applications