Materials:
Cpvc
About an inch and a half of a titan pump tube
3/4 Cpvc
The bottom stock of a longshot stock.
Patience
First, cut a breech slot as wide as the clip, and hammer in your stub of Titan pump tube to the 3/4 cpvc. The breech slot bottom where to dart falls on needs to be 1/4 of an inch. Note: The bottom part of the slot here is NOT 1/4 inch, but it needs to be.


Here's what it should look like:

Then cut your stock like so:


Next, glue your Stock Butt on your cut breech. Note: when the clip is in, it needs to line up with the bottom of the slot cut

And wrap your cpvc in electrical tape to have snug/loose fit in the 3/4 cpvc.
You can also attach a string so whenever you open your breech your barrel does not fall out.
And now you can attach it on any cpvc coupler!
Video:

Update: The clip fits the drum mag and it is very sturdy, but bulky.


Questions or Comments? Anything unclear?
Edited by soccerbeast003, 01 February 2010 - 04:57 PM.