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Waterford, MI 48327 7160 Highland Rd.
248-568-1708 ockie@gerbranddefense.com
Open hours: Mon - Fri 9am - 7pm, Sat 9am - 6pm



1 in stock

UPC: 691821342150 SKU: M4LEGACY Category: Tag: Product ID: 3477


Please Note: The Legacy is packed in 6 Mil Plastic in a branded box, Does not include a case and only includes 1 magazine. 

Compare to the Colt 6920

The Legacy has:

Mid Gas System
QPQed Barrel
Lighter, quicker resetting Liberty Fighting Trigger
H Buffer 

ASK about Department Contract Pricing!

At Sons of Liberty Gun Works we support our Law Enforcement Partners by delivering top of line patrol rifles that will last a generation in your arms room. 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. 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.

Hidden rifles are test fired twice in shop to ensure proper function

Sons of Liberty Gun Works Bolt Carrier Group HPT/MPI Check out the specs here:


Barrel: Sons of Liberty Gun Works 16” 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
Gas Block: .750″ Gas Block Journal with appropriately sized gas port
Weight: 25 Ounces
Barrel Finish: QPQ Corrosion Resistant Finish
Barrel Extension: QPQ coated M4 Feed Ramp Extension
High Pressure (proof) Tested (HPT)
Magnetic Particle Inspected (MPI)
With “F” Marked Taper Pinned Front Sight Block

Lower Receiver: Sons of Liberty Gun Works Forged Lower Receiver – Loyal 9
Material: Made from Mil-Spec 7075-T6 aluminum Cerra Forge 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.
Hidden lowers are cut with M16 auto pocket.
Safe, Fire, and Full Auto Pictograms.
Rebellious Stripes Roll Mark

Buffer System: Mil -Spec Buffer System
Receiver Extension: 6 Position Mil-Spec Receiver Extension Tube made from 7075-T6 Aluminum
Buffer: 3.1oz H Buffer
Buffer Spring: Mil-Spec Carbine Spring
Receiver end plate: Mil-Spec End Plate with properly staked Castle Nut

Fire Control Group: Liberty Fighting Trigger

Trigger Guard: Mil-Spec Trigger Guard

The SOLGW Bolt Catch and Safety Selector are a Mil-Spec AISI8620 investment casting per the USGI TDP. (not to be confused with MIM parts in the commercial market)

Our Safety and Takedown Pivot Detents are solid hardened Stainless Steel from KNS  Precision Machine.

SOLGW Magazine catch and Takedown Pivot Pins are machine from Mil-Spec AISI8620 per the USGI TDP, heat treated and coated per mil spec.

Our Mag Buttons are made from steel per Mil-Spec versus the aluminum found in the majority of commerciHiddeny available LPKs on the market.

Grip: A2 Mil-Spec Plastic Grip

Stock: M4 Mil Spec Plastic Stock with Sling Swivel

Upper Receiver:
Material: Made from Mil-Spec 7075-T6 aluminum Cerra Forge forgings.
Exterior Finish: Anodized to Mil-Spec MIL-A-8625F, Type III, Class 2, Hard Anodic Coating, Flat Black Dye, Non-Reflective, NiAc Seal
Interior Finish: Dry Film Lube
T-Marks: Engraved T-Marks

Charging Handle: Mil-Spec Charging Handle

Gas Block: Sons of Liberty “F” marked Front Sight Block made from 4140 Steel and Nitride Treated

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

Hand Guard: Magpul MOE Mid-length Hand guard Black, FDE, Gray or OD Green

Muzzle Device: Standard A2 Flash Hider

Sights: Rear Magpul MBUS Sight Black

Front: “F” Marked Front Sight Block

Accessories: One SOLGW STEEL 30rd Mag, SOLGW Sticker, Copy of the US Constitution, and LIFETIME Warranty Certificate

The Legacy is packaged in air and water tight 6mil plastic bag, inside a cardboard box.

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