Due to the lack of fencing over the top right corner of the left side mag release on AERO Precision's ambidextrous M4E1 Pro lower, I had issues with magazines dropping while I had my rifle slung. I removed it and made this to fill the space left behind.

You should print this as I have it oriented. Due to the thin wall around the hole for the screw, I can't guarantee this will print properly with any nozzle over .4mm. You will likely need to enlarge the hole with a 5/64 and 3/32 drill bit, VERY slowly. The fit on mine was very tight, a touchup with sandpaper will likely be necessary.

Made in Tinkercad with love

LBRY Tags: ar15; 3d2a