Yet another M4 AR. This time more realistic and without a grenade launcher.
About this creation
Yet another M4 assault rifle. This time I started again from scratch and used the elastic bands on two rotating prongs as well as a manually loaded bullet. I got the design a lot more accurate than before. Unfortunately it didnt work at all. It all fired at once and the bullet didnt move. I'm not sure what went wrong, but I'm still pleased with it as it looked a lot better than the other two. That is almost certainly the last time I try an M4.
Now that looks AMAZING! An idea for all your guns: it may only be possible to make it work like your psg1, but I managed 4 shots with elastic bands firing 1x2 or similar bricks. Click them on to the gun, then fire them by pushing them with a pneaumatic cylinder. Range and power is pretty scary... but can you get it to fire through the barrel?