5.56x45mm – 62 Grain M855 FMJ – Winchester (WM855150) – 600 Rounds

Winchester is a long-time supplier of military rifle ammunition, and its USA M855 load brings that green tip 62 grain specification to the commercial market. This listing is Winchester USA M855 5.56x45mm NATO 62 grain green tip ammo, MPN WM855150, sold as 600 rounds in 150 round value boxes.

Winchester rates this load at 3,060 fps with 1,289 ft-lbs of muzzle energy. The M855 bullet has a lead core with a small steel penetrator in the nose, marked by its green tip. The 62 grain bullet holds velocity and resists wind drift better than 55 grain M193, and it stabilizes best in 1:7, 1:8, and 1:9 twist barrels, which covers most modern AR-15 rifles. Shooters use M855 to match military ballistics, zero rifles that will run it, and train on steel at distance.

This ammunition fits rifles chambered in 5.56x45mm NATO or 223 Wylde, including AR-15 rifles and carbines, the FN SCAR 16, Sig MCX and M400, IWI Tavor, HK416 and MR556, Springfield Saint, and Ruger Mini-14 rifles marked 5.56. A common question is whether M855 is allowed at my range. Many indoor ranges and some outdoor ranges ban steel penetrator ammunition because it can damage steel targets and backstops, so check the rules first. It can also damage steel targets at close range, so follow safe distance guidance. Another common question is whether M855 is armor piercing under federal law. M855 is generally treated as exempt for sporting use and is widely sold, but laws can change, so stay informed. Do not fire 5.56 NATO in a rifle marked only 223 Remington.

Winchester WM855150 is new production ammunition, not reloads, made in the USA. Each round uses a reloadable brass case with a boxer primer and is non-corrosive. This listing ships as 4 boxes of 150 rounds for a total of 600 rounds of 5.56 NATO 62 grain M855.