Anodized aluminum Picatinny rails for attaching accessories to M-LOK compatible hand guards and forends. MDTs M-LOK Picatinny Rails are designed to be a reliable addition to our chassis systems when installing various accessories on your bolt action rifle. They are machined from 6061-T6 aluminum, then hard-anodized black for a durable finish. The rails also feature laser etched positioning markers making repeatable set ups easier. They come in a variety of lengths, feature an integral QD flush cup sling mount on select sizes and include the necessary hardware for mounting to M-LOK compatible attachment systems, which are currently integrated in many of our chassis system and forend designs. MDTs M-Lok Picatinny Rails are compatible with M-LOK attachment systems, such as all MDT Chassis Systems, our SRS and SCS buttstocks.