BudsGunShop.com - Ammo compatible with my rifle?

Stephen, yes sir, your Sport II is rated for 5.56 NATO, so any 5.56 or .223 ammo will work in your gun. Have a great day!

Stephen, yes it is. The Smith and Wesson M&P 15 Sport II can fire 5.56 safely. So this will fit and function just fine. I've shot a good bit of adi branded ammo and it's always been reliable. Hope this helps.

Stephen, yes Sir it is. ADI is quality ammo and your M&P 15 Sport will have no issues. Cheers and stay safe!