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Sons of Liberty Gun Works M4-EXO2 300BLK Pistol - 10.5"

AR Pistol

Out of stock

FFL Required Before Shipping.

Please have your dealer email a copy of their FFL to [email protected] or fax it to 253-218-2998, referencing your name and order number.


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 our Liberty Fighting Trigger 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 rifles are test fired twice in shop to ensure proper function.

The M4-EXO2 is our newest entry level carbine packed with great features.  The Sons of Liberty EXO2 MLOK rail is the best on the market at its price point, it looks great and locks up rock solid.  This rifle has an option for the Vltor A5 buffer system or upgraded charging handle.  Built with the same high quality components that have given us our reputation for guns that never stop running, you can't beat it at this price.


Sons of Liberty Gun Works 10.5” 4150CoMOV 1:7 MPI HPT Barrel
Caliber: 300BLK
Barrel Steel: 4150 CrMoV (Chrome Moly Vanadium per MIL-B-11595E)
Twist Rate: 1/7 Twist Six Groove
Thread Pitch: 5/8x24
Gas Block: .750″ Gas Block Journal with 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)

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.
cut with M16 auto pocket.
Safe, Fire, and Full Auto Pictograms.
Choice of Roll Mark

Buffer System: Mil-Spec Buffer System
Receiver Extension: 5 Position Mil-Spec Receiver Buffer Tube made from 7075-T6 Aluminum, Dry Film Lubed with rolled threads per spec.
Buffer: H2 Buffer
Buffer Spring: Sprinco Blue Rifle Length Spring
Receiver end plate: QD Mil-Spec with properly staked Castle Nut

Sons of Liberty Gun Works Liberty Fighting Trigger

Mil Spec components 

solid reset 

5.5lb pull.

Safety Selector: Sons of Liberty Gun Works Selector

Grip: B5 Systems P23 Grip – Black

Brace: SB Tactical SBA3 

Upper 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
T-Marks: Engraved T-Marks
Engraved Rebellious Stripes Flag Logo

Charging Handle: SOLGW Raptor LT

Gas Block: Sons of Liberty Lo-Pro Gas block 

4140 Steel 

Nitride Treated

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

Handguard: Sons of Liberty EXO2 MLOK Rail

Weight: 11.9oz

MLOK Slots at 11, 9,6,3&1 o'clock

Full top rail at 12 oclock

Muzzle Device: Mil-Spec A2 Flash Hider

Includes: Allen Tactical Soft Case, Three Okay Industries Surefeed 30rd Mags , 5 Slot M-LOK Rail Section and Aluminum M-LOK QD Socket, SOLGW Sticker & Patch, and LIFETIME Warranty Certificate. 

More Information
Product Type AR Pistol
Manufacturer Sons of Liberty Gun Works
Gas Block Diameter .750"
Thread Pitch 5/8x24
Gas Length Pistol
Rail Length 9.5"
Barrel Length 10.5"
Caliber 300 Blackout
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