♦ Extends the lower rail to 2.2 inches and also includes the KeyMod Topcover for additional mounting surfaces ♦ Easy install, replaces factory plastic with no weapon alterations ♦ Made to accept KeyMod rail sections and accessories ♦ One five slot 2.1" KeyMod rail secton included ♦ Lightweight, rugged construction of 6061 aluminum, hard coat anodized for a lifetime of service ♦ 8.7 oz without rail, 9.6 oz with 5 slot rail ♦ Optional end cap for internal weapon light available! ♦ Lifetime Warranty ♦ 100% Made in the U.S.A.