Can use two CR123A batteries, one CR18650 battery, or one CR16650 battery, 3.7V

1x25 mm FMC Optics Lens Fogproof IPX7 Waterproof 1000Gs Shock Resistant Hunting Scope

Hold Recoil&Zero on fire arms cablibre 5.56/7.62

With 20mm Picatinny Mount & Glock Mount & SIG Mount

The FAST™ Micro-S Mount places Aimpoint CompM5s, CompM5b, and Duty RDS sights at 2.26″ optical center line above weapon rails. This stance makes these optics fully compatible with Flip-To-Center Magnifier Mounts and provides all the same application benefits found with legacy FAST Mounts.

Aimpoint 3X-C Magnifier With FAST FTC 2.26 QD Mount Combo