C&H Precision Weapons DMO Optic HK Reflex Red Dot Sight 1x20mm Green Multi Black. It is IPX7 waterprooof and +P+ recoil rated. 50000 hour battery life with shake-to-wake technology. Specifications for C&H Precision Weapons DMO Optic HK 1x20mm Reflex Red Dot Sight: Manufacturer: C&H Precision Weapons Color: Black Fabric/Material: 7075 Aluminum Magnification: 1 x Objective Lens Diameter: 20 mm Reticle: Green Brightness Settings: 10 Adjustment Type: MOA Adjustment Click Value: 1 MOA Emitter Type: Open Parallax: 33 yds Battery Type: Lithium Battery Life: 50000 hours Gun Make: Heckler & Koch Gun Model: Heckler & Koch FABARM FP6 Weight: 1.3 oz Quantity: 1 Package Contents: C&H Precision Weapons DMO Optic HK 1x20mm Reflex Red Dot Sight C&H Precision Weapons RD-HK-DMO-GR-MR: DMO Optic HK Reflex Red Dot Sight 1x20mm Green Multi Black