When i saw J.J.'s springfield, i was inspired. so, i came up with my own bolt action mechanism. just like a real gun, open the bolt, load the rubberbands (i got 5 on), close the bolt, and fire! just open and close it again just like a real gun, and fire again. this was the most challenging mechanism that i have ever made. i might also post a vid. of this.
side of the gun, so you can see the bolt handle thingy