Revolver John shares this takedown video of the WinGun WG 701 4" airsoft revolver that other owners can follow when doing their own maintenance... "There are some parts can be shared between WinGun revolvers. That's why the color of the outer layer of gun barrel is different. And you may notice the reason I installed it on my competition revolver - the concept prototype for fiber sights installation on WinGun 7 Series revolvers integrated and adapted to the gun by me."