UTG 3-Rail 3 Slot Angle Mount w/QD Level Locking System

Precision machined from aircraft-grade aluminum alloy with anodized black matte finish
Innovative shared rails for versatile accessory placements at 45 and 90 degree angles to allow for instant aiming switch among iron sight, optical sight, laser and/or flashlight
Robust and user-friendly ergonomic quick detach/lock lever fully adjustable to fit on any Picatinny rail
Tight tolerance control with anti-rotation feature to guarantee most positive and repeatable zero and re-zero capability
Integral design with overall crocodile profile and light weight machine cut for optimal tactical applications

Here are the specs