Description Assessments (0) LMT 40mm m203 receiver. Made to be mounted to any common 1913 Picatinny rails. Does not contain barrel or sight. Consists of three recoil lugs and a few locking lugs to carry to rail. Developed from 7075 T6 aluminum forging for toughness.Silent, lethal and suppressor-pleasant, there’s a ton to love about Hornady’s ne