Well after I made the minipump gun http://localhost/forums/viewtopic.php?t=3575
I showed it to my friends and they all enjoyed it, so I decided to make one for my brother and another for one of my friends. This is the finial product I ended up with.
http://members.cox.net/clide/minipump/x ... umpxlt.jpg
http://members.cox.net/clide/minipump/x ... tended.jpg
http://members.cox.net/clide/minipump/x ... orings.jpg
It is basically the same gun but with a few improvements over the last version. First I lengthened the grip between the pump and the gun and added a soft grip to make it more comfortable (the grip is from toy nunchucks). I also added a handle for the pump at the request of my brother.
I made the pump double o-ringed to make it easier to shoot. In the last version you had to move the pump quickly when you got to the end or you would lose all the air from the chamber and have a weak shot. The double o-ring corrects that problem.
At the end of the pump I added holes to allow the pump to get back to atmospheric pressure instead of having to remove the plunger like my last version. I also added some color bands so you know when the pump has reached the end.
The ammo of choice for this gun is tic tacs. They are cheap and work great. In fact, In the last picture you can see a small piece of a green tic tac that are probably all over my room from tic tacs shattering against the walls.
I also gave this gun a paintjob as you can see. Its not the greatest, but its my first time, hopefully I will get better.