REFLEX Base Water Housing for Nikon D850 - AquaTech Imaging Solutions
Amazon.com : Tactical Green and Red Dot Sight - 4 Reticles Reflex Sight with Built-in Weaver-Picatinny Rail Mount for 22mm Rail Base - Water Resistant Shockproof & Lightweight with Adjustable Brightness :
UTG OP3 Micro Green 4 MOA Single Dot Reflex Sight Adaptive Base - C&D Arms Supply LLC
Valley Litho Supply. Rubber Base Reflex Blue- 1 LB