BRAND NEW 900 rounds 10 boxs X 90 rounds Federal LAKE CITY 5.56 55gr XM193 ammo on stripper clips. Straight out of Lake City comes a fantastic 5.56x45mm round that your AR-15 will just eat up like it's candy. Great reliability, smooth feeding and easy on the wallet, this 55 grain lead core XM193 5.56x45mm ammo is just the round you've been looking for.