? Professional grade one piece design? Simple installation, includes all tools? Extremely lightweight design, weighs only 8.6 oz with all hardware? Slim 1.6 inch diameter for a great feel? Features 37 full and 7 half M-LOK slots? One five slot M-LOK™ compatible rail included? Features four anti-rotation QD sling swivel sockets? Constructed of 6061 aluminum, hard coat anodized for a lifetime of service? 100% Made in the U.S.A., 922R Compliant? MI Lifetime Warranty? Will not work with CTME 308 rifles? Patent pending M-LOK™ is a trademark of Magpul Industries Corp