RS Regulate AKM Accessory Mount Picatinny Fits .66in Barrel Diameter Matte Finish Black. This accessory mount will allow the use of any attachment that accepts picatinny style mounting. Weighing in at just 0.8oz" this mount will completely change how you see this classis firearm of the past. Specifications for RS Regulate AKM Accessory Mount Picatinny Fits: Manufacturer: RS Regulate Color: Black Finish: Matte Gun Rail: Picatinny Diameter: 0.59 in Condition: New Handle Color: Black Package Contents: RS Regulate AKM Accessory Mount Picatinny Fits