Federal XM193BLC100-CS 5.56x45mm 55GR FMJ 500RD

500 Round Case

The M16 is a military rifle that began seeing service in 1962, and it’s been so widely used and well-liked that multiple versions of it have been made. Not only that but other countries have adopted the M16 for their militaries to use, making it the most-produced gun of this caliber. And what caliber is that? 5.56X45mm, of course. If you own an AR chambered in 5.56, you’ve got the M16 to thank, because the hard-hitting cartridge was first designed specifically to fit the chamber of the military’s M16. It’s a rare gun owner who isn’t a fan of 5.56 for its stopping power, speed, and versatility – and, okay, it’s fun. Your 5.56 has an all-American history, so why not feed it all-American ammunition?