Hi mates,
I made a custom M4 magazine shell based off the early AR15 25 round mags and I was wondering what brand I should try cannibalise for the internals.
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I collected quite a few 20 round mags for my ACR DMR, and they are both Nylon and Metal versions that were made by a couple of different manufacturers.
I’m sure that they were made by WarInterest and possibly CYMA?
A quick google search should show a few leads on availability, but they are basically just the same internals as a standard M4 mag with shorter feed tubes, so wouldn’t be hard to convert the internals out of any mag to fit by shortening the feed tube and internal skeleton frame.