Universal Firearm Chamber Safety Flag
thingiverse
Universal Firearm Chamber Safety Flag Required at some shooting range. Good for tactics training. Improved deisign for enhanced safety - put some filament wire (1.75mm) into hole in spike of safety flag and you will be sure about barrel permeability. You can mount some addion flag on big hexagonal hole. I recommend print it with other color than the black :-) ... EDIT: added two version of .22LR chamber flag, it can be used for .22 LR (or .223Rem) to .50 BMG ...see photo
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