sonsofliberty M4 L89 13.7″

he L89 Series of M4’s represents our uncompromising commitment to the professional end user. Built on our precision-forged upper and lower receivers, these rifles feature our purpose-built L89 Drivelock Handguard system with 7-sided MLOK slots and integral steel QD cups on both sides. We’ve equipped these with extended steel barrel nuts for a more rigid lockup, and Combat V2 Barrel that deliver accuracy when it matters most. The enhanced A5 Length Buffer System provides superior recoil management, while also including premium components such as renowned our Bolt Carrier Group, Liberty Charging Handle, Liberty Combat Trigger, and an ambidextrous selector. Comes standard with SB Tactical brace and B5 grip.