AR Mag Block

Mag Block that shows the weapon is "INERT".

Make sure the bolt is pulled back when inserting the mag block as it activates the LRBHO device permanently until mag the block is removed!
Also displays “EMPTY” inside the ejection port with enough space for either you or the RSO to visually check the chamber.

Creality K1 Max

PETG, or PLA

15% infill

.4 nozzle, 5 wall, 10 layer top & bottom