Description Reviews (0) LMT 40mm m203 receiver. Meant to be mounted to any conventional 1913 Picatinny rails. Doesn't involve barrel or sight. Includes 3 recoil lugs and three locking lugs to carry to rail. Constructed from 7075 T6 aluminum forging for sturdiness.huntingheart.com is usually a participant inside the Amazon Providers LLC Associates A