Airsoft SR25 Midcap Shell

**Update 8/16/18: Finally got a chance to test in SR25's, and got one now, and found that the upper ridge prevented proper seating in the magwell. I have lowered this ridge by 1mm to help this. I believe many downloaders wanted this for the SR25, and I hope this helps!

This is the final version of https://www.thingiverse.com/thing:2967392 and has been tested to both fit and feed properly. There are 2 versions, one is unsupported and is a hollow shell. The other is a version which includes int