M4 Airsoft Drum Mag Screw

Just a cooler top than the original one.
M5 nut has to be inserted while printing.

(Picture shows a G&P M4 Attack Type Magazin)

Suppressor: https://www.thingiverse.com/thing:3014541
Angled grip: https://www.thingiverse.com/thing:2939218
Bolt catch: https://www.thingiverse.com/thing:2886261
Sling plate: https://www.thingiverse.com/thing:3063470
Fire selector: https://www.thingiverse.com/thing:2889913
Barrel cover: https://www.thingiverse.com/thing:2886730