Originally Posted by Ultimate_sig
How can i verify them
Well the M249 is a gun not a cartridge like C3 said. So that's a red flag.
Black tip= AP
The only AP ammo I am aware of that can be privately owned is the M2 AP 30-06. And they don't even make it anymore. Red flag
Any AP ammo will have magnetic characteristics. If the ammo you are talking about dose not attract a magnet red flag.
And above all. When in doubt trust in C3. The man knows more about any gun or ammo than the people that created them.