OVERVIEW:

The M4-L89 is the premier fighting rifle we offer. It houses our combat grade barrel, A5 buffer system, Liberty Fighting Trigger, Ambi Liberty Charging Handle, ambi Quick Selector, and B5 furniture. At Sons of Liberty Gun Works, we always tell our customers that it’s not what a rifle company tells you, it’s what they don’t tell you. Below you will find the complete specifications of the M4-L89. We have built our guns to run through years of hard use, and we have nothing to hide.

see availability

Barrel Specs:

Barrel: SOLGW 4150CoMOV 1:7 MPI HPT Barrel, V2 Profile

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

Barrel Finish: QPQ Corrosion Resistant Finish

5.56mm Chamber, 1:7 twist, Button Rifled

Gun Specs:

9 position A5 length Buffer System with Rifle Spring

Quick Ambi Selector – Billet Steel, 50* rotation, Ambi, QPQ Finished

Liberty Charging Handle with high gas shelf (ambi)

Liberty Fighting Trigger

Integral QD sockets on handguard

OVERVIEW:

The M4-L89 is the premier fighting rifle we offer. It houses our combat grade barrel, A5 buffer system, Liberty Fighting Trigger, Ambi Liberty Charging Handle, ambi Quick Selector, and B5 furniture. At Sons of Liberty Gun Works, we always tell our customers that it’s not what a rifle company tells you, it’s what they don’t tell you. Below you will find the complete specifications of the M4-L89. We have built our guns to run through years of hard use, and we have nothing to hide.

see availability

Barrel Specs:

Barrel: SOLGW 4150CoMOV 1:7 MPI HPT Barrel, V2 Profile

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

Barrel Finish: QPQ Corrosion Resistant Finish

5.56mm Chamber, 1:7 twist, Button Rifled standard

Gun Specs:

9 position A5 length Buffer System with Sprinco Green Spring

Quick Ambi Selector – Billet Steel, 50* rotation, Ambi, QPQ Finished

Liberty Charging Handle with high gas shelf (ambi)

Liberty Fighting Trigger

Integral QD sockets on handguard

OVERVIEW:

The M4-L89 is the premier fighting rifle we offer. It houses our V2 barrel, A5 length buffer system, Liberty Fighting Trigger, Ambi Liberty Charging Handle, ambi Quick Selector, and B5 furniture. At Sons of Liberty Gun Works, we always tell our customers that it’s not what a rifle company tells you, it’s what they don’t tell you. Below you will find additional specifications of the M4-L89. We have built our guns to run through years of hard use, and we have nothing to hide.

see availability

Barrel Specs:

Barrel: SOLGW 4150CoMOV 1:7 MPI HPT Barrel, V2 Profile

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

Barrel Finish: QPQ Corrosion Resistant Finish

5.56mm Chamber, 1:7 twist, Button Rifled standard

Gun Specs:

9 position A5 length Buffer System with Sprinco Green Spring

Quick Ambi Selector – Billet Steel, 50* rotation, Ambi, QPQ Finished

Liberty Charging Handle with high gas shelf (ambi)

Liberty Fighting Trigger

Integral QD sockets on handguard

bARREL LENGTHS

11.5″
5.56 (Carbine Gas System with A2 muzzle device & B5 Stock or No Brace)

12.5″
5.56 (Carbine Gas System with A2 muzzle device & B5 Stock or Optional Brace)

13.7″
5.56 (Midlength Gas System with P/W NOX, or HUXWRX FH & B5 Stock)

14.5″
5.56 (Midlength Gas System with Plan B, or ASR mount & B5 Stock)

16″
5.56 (Midlength Gas System with A2 Flash Hider & B5 Stock

8.5″
300BLK (Pistol Gas System with A2 muzzle device & Brace)

13.9″
300BLK (Pistol Gas System with NOX, ASR, or HUXWRX muzzle device & B5 Stock)

BARREL LENGTHS

8.5″
300BLK (Pistol Gas System with A2 Flash Hider & SBA Brace or B5 Stock)

13.9″
300BLK (Pistol Gas System with P&W NOX, ASR, or HUXWRX ; B5 Stock)

11.5″
5.56 (Carbine Gas System with A2 muzzle device & B5 Stock or Optional Brace)

12.5″
5.56 (Carbine Gas System with A2 muzzle device & B5 Stock or No Brace)

13.7″
5.56 (Midlength Gas System with P/W NOX, HUXWRX FH, & B5 Stock)

 

14.5″
5.56 (Midlength Gas System with P/W Plan B, or ASR mount & B5 Stock)

 

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

bARREL LENGTHS

8.5″
300BLK (Pistol Gas System with A2 muzzle device & SBA Brace (SBR config optional)

13.9″
300BLK (Pistol Gas System with NOX, HUX, or ASR muzzle device & B5 Stock)

11.5″
5.56 (Carbine Gas System with A2 muzzle device & B5 Stock or optional SBA Brace)

12.5″
5.56 (Carbine Gas System with A2 muzzle device & B5 Stock or optional SBA Brace)

13.7″
5.56 (Midlength Gas System with P/W Nox, or HUXWRX FH; B5 Stock)

14.5″
5.56 (Midlength Gas System with P/W Plan B, or ASR mount; B5 Stock)

16″
5.56 (Midlength Gas System with A2 Flash Hider; B5 Stock)

m4 line up:

m4 line up:

m4 line up: