3/8" dovetail mount, for example mounting Red Dot Sights. It comes without M4x25(M4x30 also works) screw or nut. For airsoft AEG's like: Star Ika Z...

Soviet (Russian) WW2 designed 65,000 ton Battleship. http://www.combinedfleet.com/furashita/soviet_f.htm

Kap van NS Bollenwagen in FUD, past op Arnold HN6121 silowagen onderstel. Voor bouwbeschrijving zie deze 2 links: http://forum.beneluxspoor.net/NS ...