Sons of Liberty Gun Works M4-EXO3 13.7" 5.56 Upper

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.

• 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
• 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

• 13.7" 
• Includes assembled Upper (Rail, Barrel, Gas System, Upper, etc.)
• ***NO BOLT CARRIER GROUP OR CHARGING HANDLE***