5.56x45mm NATO dummy round/snap-cap

This is a 5.56x45mm NATO cartridge designed to the real cartridge specifications for the round...although I think I may have made thickened the rim a little bit so that it could be chambered and ejected without the rim simply being ripped off (but I made this awhile ago so I cannot recall for sure. Sorry). The bullet-tip has been rounded off as a pointed tip likes to print like a soft-serve ice cream cone; even so, I suggest printing the topmost layers slow and with the nozzle fan running at max