The AD-SF-R Rail is the perfect mounting solution for small red dots such as the Bushnell TRS-25. The mount is 1.35" long and sits .48" above the rail. This is a Low mount for these optics. It will not co-witness with AR-15 iron sights. It is precision machined from 6061 T6 aluminum and finished in hard coat T3 Mil-Spec anodize. It features the Patented QD Auto Lock(TM) Lever system to accommodate both in spec and out of spec rail systems. Mfg: American Defense Manufacturing