Defender Ammunition Company

5.56 x 45 (5.56 NATO)

5.56 is always loaded in New Brass. Case of 1000 (20 boxes of 50 ONLY)

IMPORTANT: Though both cartridges look identical, 5.56 is loaded to a higher pressure than .223, which is why rifles chambered for a 5.56 cartridge can fire .223, but it is not recommended that 5.56 cartridges are fired out of a rifle chambered for .223

**A note on frangible: a magnet will pick up metals used as binding agents for this projectile. THIS IS NOT STEEL and any indoor range with some degree of ammunition knowledge will recognize a frangible projectile immediately. However, there are some that will insist that anything magnetic IS steel and won't let you shoot it. Please make sure your range is on-board with frangibles before you purchase these.

Did you know that you can shoot .223 out of any rifle chambered for 5.56? See our .223 selection here.

Bullet/ Grain	Application	Velocity/Test Barrel
45gr Frangible**	close-range steel, shoot-house training	2965,16"
55gr FMJ BT	training/practice, plinking	3280, 24"
55gr V-Max	hunting, defensive use	3000, 20"
62gr FMJ	training/practice, plinking	3200, 24"
75gr HPBT	training/practice, small game (will fragment on impact)	2700, 20"
77gr SMK	precision rifle, long range, hunting, similar to the military's MK262 mod 1 round.	2700, 20" Ballistic Coefficient- .372