Midwest Industries Lever Modular Top Rail, Fits Existing Midwest Industries M-LOK Lever Gun Handguards, Reverse and forward compatible, Anodized finish, Black MI-LMTR The Midwest Industries Lever Modular Top Rail adds to the versatility of an existing MI M-LOK Lever Gun Handguard. Reverse and forward compatible, the Lever Modular Top Rail allows you to mount optics, lasers, or lights further down your firearm. Made in the U.S.A.