All rifles are test fired twice in shop to ensure proper function.
The M4-76 is our premier fighting rifle, featuring a 16? combat grade barrel, milspec buffer system, Liberty Fighting Trigger, and B5 furniture. At Sons of Liberty Gun Works we always tell our 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 M4-76. We have built our guns to run through years of hard use, and we have nothing to hide.
Sons of Liberty Gun Works Bolt Carrier Group HPT/MPI Check out the specs here:
https://sonsoflibertygunworks.com/collections/components/products/solgw-bolt-carrier-group-158-carpenter-sp-hpt-mpi?variant=3084070593
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 appropriately sized gas port
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 Lower Receiver – Angry Patriot
Material: Made from Mil-Spec 7075-T6 aluminum Cerra Forge 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.
Hidden lowers are cut with M16 auto pocket.
Safe, Fire, and Full Auto Pictograms.
Various Roll Marks
Buffer System: MILSPEC Buffer System
Receiver Extension: MILSPEC Extension Tube made from 7075-T6 Aluminum
Buffer: Heavy Buffer
Buffer Spring: Milspec Spring
Receiver end plate: Quick Detach End Plate with properly staked Forwards Controls Design Castle Nut
Fire Control Group: Liberty Fighting Trigger 6- 6.5lb
Safety Selector: Sons of Liberty Gun Works Ambi Selector
Grip: B5 P23 Grip
Stock: B5 Bravo Stock Black
Upper Receiver:
Material: Made from Mil-Spec 7075-T6 aluminum Cerra Forge forgings.
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
Charging Handle: Raptor-LT Black
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 Mid Length Melonited Stainless Steel
Rail System: 15? Sons of Liberty Gun Works M76 Wedge Lock Rail system.
Weight: 12 OZ
Inside Diameter: 1.3? ID
Finish: Mil-Spec Type III Class 2 Hard Coat Anodizing per Mil-Spec Mil-Spec MIL-A-8625F
Barrel Nut: Steel with QPQ Finish
Free Floating Design
Grade 8 Fasteners
Anti Rotation- Anti Slip Design
No Special Tools Need for Barrel Nut
Continuous top rail design
Mil-Spec 1913 Mounting rails
Muzzle Device: A2 Flash Hider
Sights: None, Optics Ready
Includes: Tactical Soft Case, Three SOLGW Steel 30rd Mags
*FFL REQUIRED BEFORE SHIPPING
Please have your dealer email a copy of their FFL to [email protected], referencing your Name and order number.*
