Brownells 75th Anniversary - A Shooting Heritage

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

Barrel: Sons of Liberty Gun Works 16”
Caliber: 5.56 NATO Chamber
Barrel Steel: 4150 CrMoV (Chrome Moly Vanadium per MIL-B-11595E)

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: TBD

Finish: Tiger Stripe Cerakote
Contour is fully machined leaving no flash marks from the forging.
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, Dry Film Lubed with rolled threads per spec.
Buffer: H Buffer
Buffer Spring: Sprinco Blue 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) Mil Spec components with solid reset and consistent 5.5lb pull.
Safety Selector: Sons of Liberty Gun Works Selector
Grip: B5 Systems P23 Grip – Black
Stock: B5 Systems Bravo Stock – Black
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 Liberty Charging Handle
Gas Block: Sons of Liberty Lo-Pro Gas block made from 4140 Steel and Nitride Treated
Gas Tube: Sons of Liberty Standard Mid Length Melonited Stainless Steel
Rail System: Sons of Liberty EXO 3 MLOK Rail
Weight: 11.9oz
MLOK Slots at 11,9,6,3, & 1 o’clock
Full top rail at 12 o’clock
Muzzle Device: A2 Birdcage



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