OVERVIEW:

The M4-76 is now discontinued and being replaced with the M4-89 series of rifles.

see availability

Gun specs:

Gas Block: .750″ Gas Block Journal with appropriately sized gas port

Thread Pitch: 1/2-28 Threaded Muzzle

Twist Rate: 1/7 Twist Six Groove

High Pressure (proof) Tested (HPT)

Magnetic Particle Inspected (MPI)

Barrel specs:

Barrel: Sons of Liberty Gun Works 4150CoMOV 1:7 MPI HPT Barrel

Barrel Steel: 4150 CrMoV (Chrome Moly Vanadium per MIL-B-11595E)

Barrel Finish: QPQ Corrosion Resistant Finish

Barrel Extension: QPQ coated M4 Feed Ramp Extension

OVERVIEW:

The M4-76 is now discontinued and being replaced with the M4-89 series of rifles.

see availability

Gun specs:

Gas Block: .750″ Gas Block Journal with appropriately sized gas port

Thread Pitch: 1/2-28 Threaded Muzzle

Twist Rate: 1/7 Twist Six Groove

High Pressure (proof) Tested (HPT)

Magnetic Particle Inspected (MPI)

Barrel specs:

Barrel: Sons of Liberty Gun Works 4150CoMOV 1:7 MPI HPT Barrel

Barrel Steel: 4150 CrMoV (Chrome Moly Vanadium per MIL-B-11595E)

Barrel Finish: QPQ Corrosion Resistant Finish

Barrel Extension: QPQ coated M4 Feed Ramp Extension

OVERVIEW:

The M4-76 is now discontinued and being replaced with the M4-89 series of rifles.

see availability

Gun specs:

Gas Block: .750″ Gas Block Journal with appropriately sized gas port

Thread Pitch: 1/2-28 Threaded Muzzle

Twist Rate: 1/7 Twist Six Groove

High Pressure (proof) Tested (HPT)

Magnetic Particle Inspected (MPI)

Barrel specs:

Barrel: Sons of Liberty Gun Works 4150CoMOV 1:7 MPI HPT Barrel

Barrel Steel: 4150 CrMoV (Chrome Moly Vanadium per MIL-B-11595E)

Barrel Finish: QPQ Corrosion Resistant Finish

Barrel Extension: QPQ coated M4 Feed Ramp Extension

bARREL LENGTHS

9″
300BLK (Carbine Gas System with A2 muzzle device & Brace)

10.5″
5.56 (Carbine Gas System with A2 muzzle device & Brace)

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

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

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

16″
300BLK (Carbine Gas System with A2 muzzle device & B5 Stock)

bARREL LENGTHS

9″
300BLK (Carbine Gas System with A2 muzzle device & Brace)

10.5″
5.56 (Carbine Gas System with A2 muzzle device & Brace)

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

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

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

16″
300BLK (Carbine Gas System with A2 muzzle device & B5 Stock)

bARREL LENGTHS

9″
300BLK (Carbine Gas System with A2 muzzle device & Brace)

10.5″
5.56 (Carbine Gas System with A2 muzzle device & Brace)

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

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

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

16″
300BLK (Carbine Gas System with A2 muzzle device & B5 Stock)

m4 line up:

m4 line up:

m4 line up: