The Long Range Arms Send It Precision Shooting Level provides precision shooters with the capability to ensure that their rifles are completely level for a range of any situations, whether it's mounting scopes or building the perfect shooting position. The Long Range Arms Send It Precision Shooting Level uses five different sensitivity settings that allow users to fine-tune the level of precision they need for their rifle setup. The level incorporates a green LED light that indicates when the rifle is level, and the electronic system calculates this point up to five times faster than similar mechanical devices. Needs 0.3-inch height clearance between optic and Picatinny r Mfg: Long Range Arms