Description Testimonials (0) LMT 40mm m203 receiver. Designed to be mounted to any typical 1913 Picatinny rails. Won't contain barrel or sight. Consists of three recoil lugs and three locking lugs to hold to rail. Developed from 7075 T6 aluminum forging for toughness. Perfect for concealed carry and personal defense, https://kirkm929kyi5.wikirecognition.com/user