Description Critiques (0) LMT 40mm m203 receiver. Made to be mounted to any typical 1913 Picatinny rails. Will not involve barrel or sight. Features a few recoil lugs and 3 locking lugs to carry to rail. Built from 7075 T6 aluminum forging for toughness. We're better when we're capable to https://martinx375msp5.wikiconversation.com/user