I think this could be a cool project:
(Super low quality draw, no correct sizes just to see ... the final Rifle would look much better i´m shure)
The selection of the gas flow will be by a kind of a moving pipe: opening the breach, the pipe will get lifted, so it shoots top barrel first, after trigger pull one the moving gas-pipe tube will moved by a spring to lower barrel(as soon i made a better draw of i go post). 2 Barrels, closed bolt, good engine should be fun !!!
Here a better draw of the Valve gas-line switch-slide thing:
Hope it´s understandable !!! 😉
(Super low quality draw, no correct sizes just to see ... the final Rifle would look much better i´m shure)
The selection of the gas flow will be by a kind of a moving pipe: opening the breach, the pipe will get lifted, so it shoots top barrel first, after trigger pull one the moving gas-pipe tube will moved by a spring to lower barrel(as soon i made a better draw of i go post). 2 Barrels, closed bolt, good engine should be fun !!!
Here a better draw of the Valve gas-line switch-slide thing:
Hope it´s understandable !!! 😉