Description Testimonials (0) LMT 40mm m203 receiver. Made to be mounted to any regular 1913 Picatinny rails. Won't include barrel or sight. Includes a few recoil lugs and three locking lugs to carry to rail. Developed from 7075 T6 aluminum forging for sturdiness.As a result of its small profile and also the subsonic compatibility, we picked a Silen