The Sons of Liberty Gun Works M4-L89 SBR 14.5" 5.56 NATO delivers a purpose-built short-barreled rifle for serious shooters who demand consistency and control. Built on precision-forged receivers, it features the dedicated L89 Drivelock handguard with 7-sided M-LOK slots and integral steel QD cups, paired with an extended steel barrel nut and the SOLGW Liberty Fighting Barrel for dependable accuracy.

This 14.5" semi-automatic platform uses an enhanced A5-length buffer system to soften recoil and keep the rifle flat through strings of fire. A Liberty 2-stage trigger, Liberty charging handle, ambidextrous safety, Magpul pistol grip, and adjustable stock round out a configuration well suited for training, range work, and defensive roles where compact handling is important. Each rifle is individually built and test-fired, reflecting Sons of Liberty Gun Works’ focus on durability and practical performance.

Key Features:

• Manufacturer: Sons of Liberty Gun Works
• Model: M4-L89 SBR 14.5" 5.56 BLK
• Caliber: 5.56 NATO
• Action: Semi-automatic
• Barrel Length: 14.5"
• Capacity: 30 Rounds
• Stock: Adjustable Stock
• Grip: Magpul Pistol Grip
• Safety: Ambidextrous
• Handguard: 13.75" L89 Drivelock With 7-Sided M-LOK
• Buffer System: Enhanced A5-Length Receiver Extension
• Trigger: Liberty 2-Stage Trigger
• Charging Handle: SOLGW Liberty Charging Handle
• Included Accessories: 1 Magazine