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

• 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
• 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

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

Lower Receiver:

• Sons of Liberty Gun Works Forged Lower Receiver – Angry Patriot
• 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.
• Various Roll Marks
• Buffer System: Enhanced Mil-Spec Buffer System
• Receiver Extension: 6 Position Mil-Spec Receiver Extension Tube made from 7075-T6 Aluminum
• Buffer: H2 Buffer
• Buffer Spring: Sprinco Blue Spring
• Receiver end plate: Quick Detach End Plate with properly staked Forwards Controls Design Castle Nut
• Fire Control Group: Liberty Fighting Trigger
• Safety Selector: Mil-Spec
• Grip: B5 Grip
• Trigger Guard:  Aluminum Enhanced Trigger Guard
• Stock: SBA3 Pistol Brace (NOT included currently)

Upper Receiver:

• 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
• T-Marks: Engraved T-Marks
• Charging Handle: SOLGW Mod 4
• Gas Block: Sons of Liberty Lo-Pro Gas block made from 4140 Steel and Nitride Treated with Knurled Head Set Screws
• Gas Tube: Sons of Liberty Standard Pistol Melonited Stainless Steel

Rail System:

• Sons of Liberty Gun Works EXO3
• Inside Diameter: 1.25″ ID
• Finish: Mil-Spec Type III Class 2 Hard Coat Anodizing per Mil-Spec Mil-Spec MIL-A-8625F
• Barrel Nut: Steel
• Free Floating Design
• Grade 8 Fasteners
• Anti Rotation- Anti Slip Design
• Mil-Spec 1913 Mounting rails
• Includes 7075 Aluminum QD Socket

Muzzle Device: A2 Flash Hider