Sightmark's Mini Shot A-Spec M2 is compact optic with an unbeatable price. It comes with a weaver/picatinny mount for use on long guns, but features an RMR style footprint for use on pistols. The Mini Shot A-Spec M2 is highly water resistant and features 6 daytime illumination levels as well as 3 night vision compatible levels. Features: Comes with picatinny/weaver mount6 daytime illumination levels & 3 night vision compatible levelsWater resistant Sightmark Mini Shot A-Spec M2 1/5 MOA Red Dot Sight SM26047