Meprolights quick-detach (QD) adaptor Kit utilizes the existing rear dovetail slot for sights to mount the adaptor to hold the Mepro microRDS or any other red dot optic on the market. It is the only mounting solution to have quick mount and dismount without having to re-zero the pistol. Now almost every pistol can use a red dot optic without the need to drill and tap mounting holes on barrels or slides. The adaptor mounts directly to a Meprolight TruDot, self-illuminated sight which also functions as a back-up sight should the shooter want to remove the red dot optic. Designed as a primary pistol optic; it can also serve as a backup or a secondary CQB sight on rifles and shotguns. The small durable yet lightweight pistol optic features a 3.0 MOA red dot which allows for quick target acquisition. The large sight window provides greater FOV with both eyes open in any lighting condition, low-light or nighttime. Meprolights mounting solutions allow you to simply attach the Mepro microRDS to almost any model pistol, without needing to re-zero when removing and putting back into the same slot. Brand Meprolight USA Category Red Dot Scopes Model MicroRDS Series w/Adapter & Backup Sights Finish Black Magnification 1x Material Steel Firearm Type Pistol / Rifle / Shotgun Firearm Fit H&K 45 / 45 Compact / VP9 / SFP9 / P30 / P30SK Rear Color Green Style Quick Release Battery CR2032 Dot Size 3 MOA Eye Relief Unlimited Frame Color Black Frame Material Steel Front Color Green Mount Type Dovetail Weight 2.30 oz