Lightweight � only 9 oz. (13.5) or 10 oz. (15) - M-LOK compatible with 360 degrees of QD mounting points and a Picatinny upper rail system for virtually limitless customization options - Easy slip-on alignment and installation - Anti-rotation and anti-slip technology - Designed for free-floating barrel for improved accuracy - Precision CNC machined from 6061-T6 billet aluminum - MIL-A-8625F Type III Class 2 hard anodized flat black finish - Includes steel barrel nut and hardware - Available in 7.5 10 lengths - Available in hardcoat anodized flat black finish = Manufactured in RISE Armament�s Oklahoma facility according to strict AS9100 aerospace requirements which are more stringent than standard gun manufacturing requirements - Backed by RISE Armament�s 100% product guarantee and lifetime manufacturing warranty - Made 100% in Broken Arrow Oklahoma U.S.A.