Frames are going missing.

I know this might be a little late, but i was looking up something else and thought I should respond just in case you've didn't figure it out; Compact Earth Gov and Heavy S.C.A.F. frames, I found you must use right away other wise they disappear.  I notice these Frames not available when I went to play new game+ mode.

Here is a tip;

1. you take a weapon that was already crafted with the same frame,

2. change the frame to another frame,

3. let the player re-craft his weapon by exiting to the next menu,

4. then you'll see it avalable to add back as new with a * , now add the Compact Earth Gov and Heavy S.C.A.F. frame back to the weapon you took it off from.

5. Now create a new weapon, a new frame, and you'll see the Compact Earth Gov and Heavy S.C.A.F. frames now available.

6. create a bunch of dummy weapons right away with these frame, so it will be easier to create later. 

Note; you have to re-load the damage, speed, reload, and clip upgrades after changing the Frame.