You will find that unisex adult sizing like this is a win for matching outfits.
Hirtenberger Defence Systems Austria T-Shirt – Multiple Colors
You will find the crew neck sits close without choking, which is a big plus.
AK-104 Avtomat Kalashnikov T-Shirt – AK47 – Multiple Colors Available
A nice touch is the black button detail on the pocket.
CARFIL – Romarm Romanian Factory Stamp Logo T-Shirt – Multiple Colors Available
You will find that the unisex adult fit here is roomy without looking baggy.
Fabryka Broni FB Lucznik Radom Poland T-Shirt – Multiple Colors – AK47 SKS
This shirt is tailored for unisex adults, so it’s not boxy but not clingy.