When you're looking at Red Dot Sights, you should immediately be impressed by the Swampfox Justice 1x27mm RMR. With a sleek, low-profile design, this red dot sight performs well for everything from everyday carry to competition purposes. You can mount and use it effectively on pistols, carbines, and shotguns, giving you plenty of versatility no matter what your choice of weapon is. It is made from 7075 Aluminum so it is both durable and lightweight, and it is packed with technology in such a small frame. For example, it utilizes Shake 'N Wake technology, so you can instantly use your sight as soon as you pick up your weapon. Pick one up today to augment your arsenal! Specifications for Swampfox Justice 1x27mm 3 MOA RMR Dot Sight: Manufacturer: Swampfox Color: Black Finish: Matte Fabric/Material: 7075-T6 Aircraft Grade Aluminum Magnification: 1 x Objective Lens Diameter: 27 mm Objective Window Size: 27 mm Reticle: 3 MOA Dot Illumination Type: LED Brightness Settings: 10 Eye Relief: Unlimited Adjustment Type: MOA Adjustment Click Value: 0.5 MOA Emitter Type: Open Parallax: Parallax Free at 33 yards Lens Material: Glass Optical Coating: Multi-Coated Battery Type: CR1632 Battery Quantity: 1 Battery Life: 4000 hours Water Resistance Level: IPX-7 Water Resistant Mark: 1 m Shockproof: Yes Fogproof: Yes Gun Make: Universal Length: 1.78 in Width: 1.24 in Height: 1.04 in Weight: 1 oz Included Accessories: Standard Condition: New Magnification Type: Fixed Quantity: 1 Switch Type: Up/Down Digital Press Attachment/Mount Type: RMR Features of Swampfox Justice 1x27mm RMR Dot Sight: 800 G Forces Shockproof; Shake+Wake Technology; Compatible with duty grade holsters Package Contents: Swampfox Justice 1x27mm RMR Dot Sight Slotted head wrench S-Wing wrench Black lens cloth Rubber cover CR1632 Battery M3.5X0.6 Screws for T10 wrench 4-40x0.25 6-32x0.315