The Mepro MPO-DF is an open reflex red dot sight specially designed for full-sized pistols. This cost-effective optic punches far above its cost. It features a 3.5 MOA ret dot reticle, RMR footprint, automatic and manual brightness controls, CR1632 battery lasting 2 years plus while being water, shock, and fog proof makes this optic stand out from the crowd. The Mepro MPO-DF allows you to upgrade your current sighting system with money left over for more ammo. The Meprolight name means we only produce products we, ourselves use and carry in defense of ourselves and our families. Choose the best, choose Meprolight. IPX7 waterproof. MIL-1913 Picatinny adapter included. Brand: Meprolight USA Category: Red Dot Sights Model: MPO-DF Magnification: 1x Color: Black Reticle: 3.5 MOA Red Dot Material: Aluminum Firearm Type: Pistol Mount Type: Picatinny Rail / RMR Pattern Footprint Run Time: 15,000 hrs Adjustment Size: 1 MOA Objective: 0.89" x 0.68" Brightness Settings: 8 Day Eye Relief: Unlimited Switch Type: Push Button / Shake Awake Battery Size: CR1632 Windage Adjustment: 50 MOA Length: 1.90" Proofs: Waterproof / Fog Proof / Shock Proof Dot Size: 3.5 MOA Elevation Adjustment: 70 MOA Height: 1.00" Includes: Battery / Mounting Hardware Width: 1.30" Weight: 1.20 oz