Algodoo

Right arrow key to shoot. Up/down to aim.

It, like almost all of my designs, uses a toggle to lock the bolt closed. But this one fires from a technicaly open bolt. If anyone of familiar with the FG42, it's pretty similar to that. Aside from that, the mount is fixed to the ground using adhesion and can be moved after the locks above each foot is unlocked. The gun itself can be removed from the mount by undoing the clasp on the left side of the trunion. This gun uses a fully reusable disintegrating link belt. However, due to the operating system, it holds onto the cartriges realtivly weakly and could fall apart if josled too hard. Special thanks to Notarget1337 for the cartriges, (he didn't personally design them, but shared how they work).