30mm-tube version of the iconic Ideal Scope Mount System (ISMS) one-piece extended cantilever mount. Same patented diagonally split rings, integrated rear bubble level and accessory interfaces as the 34mm model. Hardened steel side clamp for Picatinny rails; cantilever allows mounting the scope 70mm/2.76 inch further forward. 0 MIL/0 MOA, height 38mm/1.5 inch, length 140mm/5.51 inch, weight 242g. 10-degree wedge included. Gen3.