Description Evaluations (0) LMT 40mm m203 receiver. Built to be mounted to any common 1913 Picatinny rails. Doesn't include things like barrel or sight. Features 3 recoil lugs and 3 locking lugs to hold to rail. Constructed from 7075 T6 aluminum forging for toughness.Because of its smaller profile plus the subsonic compatibility, we chosen a Silenc