Sons of Liberty Gun Works M4-89 5.56 16" M-LOK Midlength Ambidextrous AR-15 Rifle

LRF (Lower Receiver, Forward Controls Design) is a collaboration between Sons of Liberty Gunworks (SOLGW) and Forward Controls Design (FCD). Machined from a solid block of 7075 aluminum, LRF is an ambidextrous AR15 lower receiver with built-in right side bolt release. Barrel: Sons of Liberty Gun Works 16" 4150CoMOV 1:7 MPI HPT Barrel Caliber: 5.56 NATO Chamber Barrel Steel: 4150 CrMoV (Chrome Moly Vanadium per MIL-B-11595E) Twist Rate: 1/7 Twist Six Groove Thread Pitch: 1/2-28 Threaded Muzzle Gas Block: .750 Gas Block Journal with an appropriately sized gas port Weight: 27 Ounces Barrel Finish: QPQ Corrosion Resistant Finish Barrel Extension: QPQ coated M4 Feed Ramp Extension High Pressure (proof) Tested (HPT) Magnetic Particle Inspected (MPI)Buffer System: Intermediate (A5) Buffer System designed to improve reliability while creating a smoother operating cycle. Receiver Extension: Intermediate Receiver Extension Tube made from 7075-T6 Aluminum Buffer: A5H2 Buffer Buffer Spring: Sprinco Green Rifle Length Spring Receiver end plate: QD Mil-Spec with properly staked Castle Nut Fire Control Group: Sons of Liberty Gun Works Liberty Fighting Trigger (LFT) with consistent 5.5lb pull. Safety Selector:Sons of Liberty Gun Works Selector Grip: B5 Systems Grip - Black Stock: B5 Systems Bravo Stock - BlackUpper Receiver: Material: Made from Mil-Spec 7075-T6 aluminum forgings. Exterior Finish: Anodized to Mil-Spec MIL-A-8625F, Type III, Class 2, Hard Anodic Coating, Flat Black Dye, Non-Reflective, NiAc Seal Interior Finish:Anodized to Mil-Spec MIL-A-8625F, Type III, Class 2, Hard Anodic Coating, Flat Black Dye, Non-Reflective, NiAc Seal T-Marks: Engraved T-Marks Gas Block: Sons of Liberty Lo-Pro Gas block made from 4140 Steel and Nitride Treated with Knurled Head Set Screws Gas Tube: Sons of Liberty Standard Mid Length Melonited Stainless Steel Rail System: Sons of Liberty Gun Works M89 Drive Lock Weight: 13 OZ Muzzle Device: A2 Flash Hider Sights: No sights includedThe Sons of Liberty Gun Works M4-89 was designed to be Ultimate Fighting Rifle. It features their new M89 Drive Lock Rail, Liberty Fighting Trigger and the Vltor A5 buffer system. SOLGW has nothing to hide with their quality builds.