Super easy install and removal. Less than one minute with provided allen wrench M-Lok slots at the 45 degree position for perfect light location Features 37 full M-Lok compatible slots and 7 half slots for maximum versatility Constructed of 6061 aluminum, hard coat anodized with a matte black finish Features two anti rotation QD sling swivel socket Includes one five slot M-Lok compatible rail section Weights only 17.0 ounces Length 11.5 inches/ Width 1.80 inches/ OAL Height 3.2 inches/ Internal Diameter 1.625 inches MI Lifetime Warranty 100% Made in the U.SA. Patent pending design M-LOK(TM) is a trademark of Magpul Industries Corp