AimShot MT61172-40LP Low Profile Quick Release Mount, Black, 40mm Quick Release low profile Picatinny rail mount - 40mm long 10mm rise Ideal for mounting lights or lasers that you want to be able to Remove and replace quickly and easily Adjustable tension to fit a wide variety of Picatinny rails Matte black, lightweight aluminum construction Low profile height rail allows you room to mount metal mounts (metal light and laser mounts, scope Rings, etc)