Winchester USA Lake City M193 ammunition (brand part no. USA556L2) loads a 55-grain full metal jacket bullet at 3,240 fps, manufactured at the Lake City Army Ammunition Plant to the specification that has defined 5.56mm ball ammunition for decades. Winchester packages this Lake City production as a bulk 200-round box, giving AR-platform shooters a genuine mil-spec training load from one of the most respected facilities in American ammunition manufacturing. The brass cases give reloaders a second life for every fired round. In rifle ammunition for AR-15 owners who want the real Lake City pedigree, this bulk box delivers it.

Key Specifications

• The chambering is 5.56x45mm NATO, loaded to the M193 military specification.
• The bullet is a 55-grain full metal jacket, the original M193 ball weight.
• The muzzle velocity is 3,240 fps.
• The ammunition is manufactured at the Lake City Army Ammunition Plant.
• The cases are reloadable brass.
• The ammunition comes as a bulk 200-round box for high-volume training.

Frequently Asked Questions

Is this safe to shoot in a .223 Remington rifle? This is a full-pressure 5.56x45mm NATO load. It is safe in 5.56 NATO and .223 Wylde chambers, but it is not recommended in rifles chambered specifically in .223 Remington, which are built for lower pressure.

What is M193 ammunition? The original 55-grain full metal jacket military specification for 5.56mm ball, still a standard training and range loading today.

Buy Winchester Lake City M193 5.56 NATO Ammunition

Genuine Lake City ammunition carries a manufacturing pedigree serious AR-15 shooters look for, and this bulk box keeps regular training affordable. Order it from our Lubbock, Texas gun shop and it ships fast to your door.