.233/.556 15 round speed loader

15 Round speedloader for AR15/M4 in .223 or .556. There is an integrated magazine lock to assist in holding the magazine as it is loaded. Be sure to put a finger on the retainer or you might see the mag and rounds go skittering across the floor if you don't. I have printed in ABS, PLA, and PETG with no issues other than the locking tab for the magazine is a little weak in PLA.