Primary Arms SLx MD-21 Microdot Features The Primary Arms SLx MD-21 Microdot uses an upgraded LED emitter to produce a true red dot bright 2 MOA reticle that stays crisp and precise for both close range engagement and more deliberate aimed shots. The Aimpoint Micro and Standard Microdot footprint lets the sight mount directly to a wide range of pistols rifles and shotguns already set up for that pattern and it ships with a low mount plus an absolute cowitness mount with spacer so shooters can dial in the exact sight height their platform needs. Twelve brightness settings cover everything from dim indoor ranges to bright daylight and several of those settings are night vision compatible for use with NODs. The fully multi coated lens maximizes light transmission so the glass stays clear and bright throughout the day. Machined from aluminum and finished in a hardcoat anodized coating the SLx MD-21 is built to survive the shock and recoil of hard use while standing up to rain and submersion thanks to its shockproof and waterproof rating. At just 5 ounces the sight adds minimal weight to a defensive pistol or home defense shotgun without compromising durability. A single CR2032 3V lithium battery powers the optic and Primary Arms Autolive technology automatically shuts the reticle off after two minutes without motion and instantly reactivates it when picked up extending battery life without sacrificing readiness. This combination of a rugged anodized body a versatile mounting footprint and smart power management makes the SLx MD-21 a dependable micro red dot for concealed carry home defense or range training. Primary Arms SLx MD-21 Microdot Specifications Manufacturer: Primary Arms Model: SLx MD-21 Microdot Type: Red Dot Sight Power: 1x Objective: 21 mm Reticle: 2 MOA Red Dot Color: Black Material: Aluminum Finish: Hardcoat Anodized Mount Type: Aimpoint Micro / Standard Microdot Compatible Hosts: Picatinny Brightness Settings: 12 Settings Battery Size: CR2032 3V Lithium Proofs: Shock / Waterproof Includes: Low Mount / Absolute Cowitness Mount w/ Spacer Optic Coating: Fully Multi Coated Weight: 5 oz Click Value: 1 MOA Available At: GrabAGun