Description Reviews (0) LMT 40mm m203 receiver. Intended to be mounted to any standard 1913 Picatinny rails. Does not include things like barrel or sight. Features a few recoil lugs and 3 locking lugs to hold to rail. Built from 7075 T6 aluminum forging for durability.Swiftly reload Together with the intuitive and ambidextrous paddle magazine launc