M4 Patrol Rifle

Sons of Liberty Gun Works we believe in Quality Mil-Spec or better parts. We believe there is no substitute for quality and that your gun should be built right the first time, ready for hard use right out of the box. We believe a quality Bolt Carrier Group and a quality, accurate and long lasting barrel are the heart of a Combat Grade weapon. We believe in properly tuned weapons using the correct gas system length and quality buffer system components such as Sprinco Tactical Buffer Springs. We believe in our products and we back them up with a Lifetime Warranty. Our weapons our meant to be used hard and go in harm’s way, they won’t let you down.

Hidden rifles are test fired twice in shop to ensure proper function

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 14.5” 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

Weight: 22 Ounces

Barrel Finish: QPQ Corrosion Resistant Finish

Barrel Extension: QPQ coated M4 Feed Ramp Extension

High Pressure (proof) Tested (HPT)

Magnetic Particle Inspected (MPI)

With “F” Marked Taper Pinned Front Sight Block

Lower Receiver: Sons of Liberty Gun Works Forged 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.

Hidden lowers are cut with M16 auto pocket.

Safe, Fire, and Full Auto Pictograms.

Buffer System:Mil -Spec Buffer System

Receiver Extension: 6 Position Mil-Spec Receiver Extension Tube made from 7075-T6 Aluminum

Buffer: 3.1oz H Buffer

Buffer Spring: Sprinco Blue Spring

Receiver end plate: Mil-spec End Plate with properly staked Castle Nut

Fire Control Group: Liberty Fighting Trigger

Trigger Guard: Flat Mil-Spec

The SOLGW Bolt Catch and Safety Selector are a Mil-Spec AISI8620 investment casting per the USGI TDP. (not to be confused with MIM parts in the commercial market)

Our Safety and Takedown Pivot Detents are solid hardened Stainless Steel from KNS Precision Machine.

SOLGW Magazine catch and Takedown Pivot Pins are machine from Mil-Spec AISI8620 per the USGI TDP, heat treated and coated per mil spec.

Our Mag Buttons are made from steel per Mil-Spec versus the aluminum found in the majority of commerciHiddeny available LPKs on the market.

Grip: A2



Stock: M4

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: Dry Film Lube

T-Marks: Engraved T-Marks

Charging Handle: Mil-Spec Charging Handle

Gas Block: Sons of Liberty “F” marked Front Sight Block made from 4140 Steel and Nitride Treated

Gas Tube: Sons of Liberty Standard Mid Length Melonited Stainless Steel

Hand Guard: Centurion C4 Quad Rail

Muzzle Device: Standard A2 Flash Hider

Sights: Rear Magpul MBUS Sight Black, FDE or OD Green

Front: “F” Marked Front Sight Block

Accessories: Hiddenen TacticalSoft Case, Three OKAY Industries Surefeed 30rd Mags, SOLGW Sticker & Patch, copy of the US Constitution, and LIFETIME Warranty Certificate