OVERVIEW:

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 it’s not about what a rifle company tells you, it’s about what they don’t.

see availability

Barrel: Sons of Liberty Gun Works 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

Barrel Extension: QPQ coated M4 Feed Ramp Extension

Weight: 25 Ounces

Barrel Finish: QPQ Corrosion Resistant Finish

Buffer System: 6 Position MilSpec with Sprinco Blue spring

Liberty Charging Handle (ambi)

Liberty Fighting Trigger

Milspec Selector

3rd Generational Upgrades Include:

EXO3 has a 4140 Steel barrel nut vs aluminum on EXO2

Updated proprietary lockup with a custom 4140 set screw that pulls the rail into the upper

SOLGW added the anti-rotation pin from the M76/M89

Added slight finger grooves like the M76/M89 but not as pronounced

Spaced out the lightening holes to stiffen the rail

OVERVIEW:

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 it’s not about what a rifle company tells you, it’s about what they don’t.

see availability

Barrel: Sons of Liberty Gun Works 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

Barrel Extension: QPQ coated M4 Feed Ramp Extension

Weight: 25 Ounces

Barrel Finish: QPQ Corrosion Resistant Finish

Buffer System: 6 Position MilSpec with Sprinco Blue spring

High Pressure (proof) Tested (HPT)

Magnetic Particle Inspected (MPI)

With low profile 4140 gas block

3rd Generational Upgrades Include:

EXO3 has a 4140 Steel barrel nut vs aluminum on EXO2

Updated proprietary lockup with a custom 4140 set screw that pulls the rail into the upper

SOLGW added the anti-rotation pin from the M76/M89

Added slight finger grooves like the M76/M89 but not as pronounced

Spaced out the lightening holes to stiffen the rail

OVERVIEW:

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 it’s not about what a rifle company tells you, it’s about what they don’t.

see availability

Barrel: Sons of Liberty Gun Works 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

Barrel Extension: QPQ coated M4 Feed Ramp Extension

Weight: 25 Ounces

Barrel Finish: QPQ Corrosion Resistant Finish

Buffer System: 6 Position MilSpec with Sprinco Blue spring

Liberty Charging Handle (ambi)

Liberty Fighting Trigger

Milspec Selector

3rd Generational Upgrades Include:

EXO3 has a 4140 Steel barrel nut vs aluminum on EXO2

Updated proprietary lockup with a custom 4140 set screw that pulls the rail into the upper

SOLGW added the anti-rotation pin from the M76/M89

Added slight finger grooves like the M76/M89 but not as pronounced

Spaced out the lightening holes to stiffen the rail

BARREL LENGTHS

11.5″ (Carbine Gas System with A2 muzzle device & Brace)

13.7″ (Midlength Gas System with P/W Nox & B5 Stock)

16″ (Midlength Gas System with A2 muzzle device & B5 Stock)

BARREL LENGTHS

11.5″ (Carbine Gas System with A2 muzzle device & Brace)

13.7″ (Midlength Gas System with P/W Nox & B5 Stock)

16″ (Midlength Gas System with A2 muzzle device & B5 Stock)

Barrel Lengths

16″ (Midlength Gas System with A2 muzzle device & B5 Stock)

11.5″ (Carbine Gas System with A2 muzzle device & Brace)

13.7″ (Midlength Gas System with P/W Nox & B5 Stock)

m4 line up:

m4 line up:

m4 line up: