This all started because I wanted to put an Empire Rip Clip on a mag. I about gave up on the project, but needed something to relieve some stress and there's nothing better than a pb project to get some of that out of your system.
So I started with an old direct feed body and here's my mod:
Step 1: cut off the feedneck and get a rough shape.
Step 2: Put a barrel in the marker to make sure the back of the "D-shape" hole is at the back of the hole in the barrel.
Step 3: use the trracer rail to make sure the hole is cut slightly larger in the body than in the rail.
Step 4: polish the cut area on the body
Step 5: cut the rail to size for the mag body
I chose to cut the rail such that I could use the rear part of the ramp. (I know GoatBoy just used the entire rail and didn't cut it down at all.)
Step 6: epoxy all pieces onto the body
Step 7: hand feed first strike rounds (with slight barrel modification), use vert feed, Rip Clip, or stick feed.
WARNING:
If you do not do step 2, you could end up with a hole cut further back than the feed on your barrel rendering the whole thing useless.
Acknowledgements:
I saw this done once before by a guy who used zip ties to hold the trracer rail to the mag body. That was my inspiration. After starting this project, I noticed that a few other people had done it too. However, I never found a "how to" for the mod, so decided to make one. Again, I'm definitely not the first to do this and so cannot take credit for the idea.
Enjoy.