SwampFox RDLR122-2RD: The second generation Liberator incorporates some incredible new features. Shake N Wake motion sensing auto on/off, super-efficient crisp 2 MOA dot emitter, and a greatly improved battery life combine to provide a significant performance upgrade over gen 1. The Liberator II features a 2-night vision and 8 daylight bright illumination settings. While most red dots come with just one low profile mount, the Liberator II ships with both a low profile and an absolute co-witness height 1913 MIL-STD Picatinny mount. This optic is small and light but also rugged and waterproof. The Liberator II will also withstand quite a kick and is recoil rated for use with up to 12 gauge shotguns up to .308 caliber rifles. As with all Swampfox optics, the glass inside and out has premium clarity and multiple coatings: anti-scratch, anti-glare, anti-fog and hydrophobic.