XM855 is the commercial version of the U.S. military M855 green tip load, and Federal is a leading supplier of it to civilian shooters. This listing is Federal American Eagle 5.56x45mm 62 grain XM855 full metal jacket ammo, MPN XM855FF30, sold as 600 rounds. It suits AR-15 owners who want to train with a military specification bullet weight and who like having a stock of NATO spec ammunition on hand.
The XM855 bullet is a 62 grain full metal jacket with a steel penetrator in the nose and a lead core behind it, marked by the green painted tip. The design came from military requirements for penetration at distance. It stabilizes best in 1 in 7 or 1 in 9 inch twist barrels, which covers most modern ARs. Because the bullet does not expand, this is training and target ammunition, not a hunting or home defense load. We do not list a velocity because we could not confirm the published figure for this part number.
This ammunition fits rifles chambered in 5.56x45mm NATO, including AR-15 and M4 style rifles from Colt, Daniel Defense, BCM, FN, Smith and Wesson, and Ruger, plus the FN SCAR 16, IWI Tavor, and Ruger Mini-14 marked 5.56. A common question is whether green tip ammo is allowed on steel targets. Many ranges ban steel core ammunition because it can damage steel plates and cause sparks, so check before you shoot. Another common question is whether 5.56 NATO can be fired in a rifle marked 223 Rem only. It is not recommended, as 5.56 runs at higher pressure.
Federal XM855FF30 is new production ammunition, not reloads, made in the USA. It uses reloadable brass cases with boxer primers and non-corrosive components. The listing ships as 600 rounds from one lot, which keeps function and point of impact consistent across many carbine sessions.
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