The M4-76 is the newest addition to the Liberty Series, featuring their brand new M76 Wedge Lock Rail. The M76 features a Steel Barrel nut and rock solid Wedge Lock locking system. The M4-76 also features our Liberty Fighting Trigger, Raptor-LT Ambi Charging Handle and awesome Vltor A5 buffer system, for the Ultimate Fighting Rifle. At Sons of Liberty Gun Works they always tell their customers, its not what a rifle company tells you, it’s what they don’t tell you. Below you will find the complete specifications on the M4-SL. They have built their guns to run through years of hard use, and we have nothing to hide.

• Caliber: 5.56 NATO Chamber
• Barrel Steel: 4150 CrMoV (Chrome Moly Vanadium per MIL-B-11595E)
• 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)

Lower Receiver: Sons of Liberty Gun Works Forged “Angry Patriot” Lower Receiver

• Material: Made from Mil-Spec 7075-T6 aluminum forgings
• Finish: Anodized to Mil-Spec MIL-A-8625F, Type III, Class 2, Hard Anodic Coating, Flat Black Dye, Non-Reflective, NiAc Seal
• Contour is fully machined leaving no flash marks from the forging.All lowers are cut with M16 auto pocket.
• Safe, Fire, and Full Auto Pictograms.

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

Upper 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 M76 Wedge Lock
• Weight: 13 OZ
• Muzzle Device: A2 Birdcage Flash Hider
• Sights: No sights included

Includes: Allen TacticalSoft Case, Three 30rd Mags, SOLGW Sticker & Patch, copy of the US Constitution, Steel M-LOK QD Socket and LIFETIME Warranty Certificate