Coal Ten

This write-up is for a pull-and-release type HAMP.


Step One:
Make a HAMP plunger head and plunger tube following KaneTheMediocre's excellent writeup.


Step Two:
Attach whatever barrel material you choose to your plunger tube. In this case I drilled a 5/8" hole into the front.

I then inserted CPVC nested into a few inches of a Longshot's faux barrel, for shooting arrows (thanks VelveetaAvenger).


You could also affix a 1/2" PVC tee to the side of the plunger tube.

For the clip of the RSCB, I used 10" of 1/2" PVC drilled out to 5/8".

I used about 15" of 1/2" PVC for the barrel.

Step Three:
Drill a 7/8" hole near the end of your plunger tube.

Now insert and glue some 1/2" PVC for a handle.

Step Four:
Use four 10" long mini bungee cords (two attached to each other) for the "release" part of your gun.


Done!
I don't have any official ranges yet, but it does shoot pretty hard. I find that suction micros work best in the RSCB because the velcro on taggers tends to get splayed out, and jam.