These are stripped 11.5" Carbine gas, Forged Barrels with gas ports installed and dimpled for a strong gas block installation.

Features

• Enhanced Lightweight Fluted Barrel M4 Feed Ramp Barrel Extension USGI
• Continuous taper designed for optimal weight, balance, and performance on a semi-automatic carbine
• Heavier profile toward the rear near chamber area
• Gas block .625"
• USGI 1/7 Twist Rates
• USGI 5.56 NATO Chambers
• Mil-Spec 11595E - Barrel Steel CMV
• Chrome Lined Bore and Chamber
• Manganese Phosphate Barrel Finish
• USGI Government Profile Barrels
• HPT High Pressure Test Barrels
• MPI Magnetic Particle Inspected Barrels