AR-15 / AR-10 (or any railed rifle) Tactical Scope Mount for 30mm Optics Brand new. $40 (half the cost of new. Good looking and sturdy scope mount. Picatinny rails for adding lasers, lights, etc. Quick detachable with 3 thumb studs. Fits onto flat top receiver with picatinny rail. Bought by mistake...my scope has 1" (25mm) tube not 30mm.