Nikon

The M-300 BLK riflescope was developed to maximize the effectiveness of the .300 AAC Blackout cartridge, while using both supersonic and subsonic ammunition. It is completely optimized for use with Spot On Ballistic Match Technology, which allows shooters to discover all of the exact aiming points on the BDC SuperSub reticle at different yardages. Nikon builds these scopes from aircraft grade aluminum alloy and utilizes larger internal lenses. Spring loaded instant zero reset turrets are included to simplify field adjustments.