The Modular Combat Suppressor Rail is perfect for tactical or competition use. Precision machined from 6061-T6 aluminum, it features a seamless top Picatinny rail and slots at 3, 6 and 9 O'clock positions for solid mounting of accessories. The free-floating MCSR V2 is extremely lightweight and suppressor compatible. This 15" M-Lok model has a black hardcoat anodized finish and is compatible with AR15 platforms.