This M4 Carbine Viewloader Buttstock is compatible all paintball markers. It is easy to install—installation does not require any tools, and takes less than a minute. It is simply plug-and-play, and you are ready for tactical paintball action! You can switch the stock in between game for different type of play.
The Real Action Paintball ViewLoader Carbine Buttstock is newer, so it should be commonly available, both new and used.