SOLGW M4-EXO3 10.5″ Pistol | Sons of Liberty Gunworks

MSRP: $1,550.00
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Third Generation EXO3 Rail 9.5″

10.5″ 5.56 Combat Barrel

Liberty Fighting Trigger

SBA 3 Brace

H2 Buffer & Sprinco Blue Spring

QD End Plate

(1 customer review)

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At 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 the NOX Muzzle Device and 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.

All SOLGW rifles are test fired twice in shop to ensure proper function.

The M4-EXO3 is the third generation of our proven EXO series fighting rifles.  Our rifles are built with duty and service in mind, whether it be Law Enforcement, Hunting or home defense.  Our EXO series rifles have everything you need and are built to require minimum maintenance for years.  We share all our specs with you because its not about what a rifle company tells you, its about what they don’t.

Sons of Liberty Gun Works Bolt Carrier Group HPT/MPI Check out the specs here:

Bolt Carrier Group SOLGW 5.56 158 Carpenter SP/HPT/MPI » % (

Barrel: Sons of Liberty Gun Works 10.5” 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
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: Enhanced Mil-Spec Buffer System
Receiver Extension: 6 Position Mil-Spec Receiver Extension Tube made from 7075-T6 Aluminum
Buffer: H2 Buffer
Buffer Spring: Sprinco Blue Spring
Receiver end plate: Quick Detach End Plate with properly staked Forwards Controls Design Castle Nut

Fire Control Group: Liberty Fighting Trigger

Safety Selector: Mil-Spec

Grip: B5 Grip

Trigger Guard:  Aluminum Enhanced Trigger Guard

Stock: SBA3 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: SOLGW Mod 4

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 Pistol Length Melonited Stainless Steel

Rail System: Sons of Liberty Gun Works EXO3 9.5″
Inside Diameter: 1.25″ ID
Finish: Mil-Spec Type III Class 2 Hard Coat Anodizing per Mil-Spec Mil-Spec MIL-A-8625F
Barrel Nut: Steel
Free Floating Design
Grade 8 Fasteners
Anti Rotation- Anti Slip Design
Mil-Spec 1913 Mounting rails

Includes 7075 Aluminum QD Socket

Muzzle Device: A2 Flash Hider

Sights: NONE

Includes: Tactical Soft CaseThree SOLGW Steel 30rd Mags, 2oz bottle of SPEC76 Lube,  SOLGW Sticker & Patch, copy of the US Constitution, and LIFETIME Warranty Certificate

Additional information

Weight 124 oz
Dimensions 54 × 6 × 16 in

1 review for SOLGW M4-EXO3 10.5″ Pistol | Sons of Liberty Gunworks

  1. Homer Malacara (verified owner)

    Great Gun! will be ordering from BTO again!

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