CAMVATE NATO Clamp with 1/4"-20 Threads & Safety Rail (2") NATO Clamp with 4 x 1/4"-20 Threads, 2" NATO Safety Rail, For Quick Accessory Mounting & Release, Rail Mounts via 2 x 1/4"-20 Screws, CNC-Machined Aluminum Alloy, Screws & Allen Wrench Included...