Winchester M193 rifle ammunition (brand part no. WM193500) loads a 55-grain full metal jacket bullet built to the U.S. military’s M193 ball-ammunition specification, a widely recognized designation for standard 5.56mm training and range loads. This cartridge is dual-rated for 5.56mm NATO and .223 Remington chambers, so it runs cleanly in either. Winchester loads M193 in brass cases for reliable extraction and reloading compatibility, keeping the mil-spec designation without the mil-contract price. For 5.56/.223 shooters who want a proven military-spec loading in bulk, this rifle ammunition from Winchester is built for exactly that.

Key Specifications

• The chambering is 5.56mm NATO, dual-rated for use in .223 Remington-chambered rifles as well.
• The bullet weighs 55 grains, the standard M193 weight.
• The bullet is a full metal jacket (FMJ), built for reliable feeding rather than expansion.
• This is an M193 loading, a U.S. military ball-ammunition specification widely used for training and range work.
• Case material is brass, standard for reliable extraction and reloading.
• Cost runs about $0.57 per round, priced for high-volume range use.
• This listing is a 500-round box.
• Shipping weight runs about 13.3 pounds.

Frequently Asked Questions

What is M193? A U.S. military ball-ammunition designation for 55-grain 5.56mm FMJ, widely used as a training and range spec.

Is this compatible with .223 Remington rifles? Yes, it is dual-rated 5.56mm NATO/.223 Remington.

How many rounds come in this box? This listing ships a single 500-round box.

Buy the Winchester M193 5.56mm 55gr FMJ, 500-Round Box

M193 is the benchmark 5.56 training spec for a reason, and this box gives 5.56/.223 shooters that proven loading at a bulk price. Order it from our Lubbock, Texas gun shop for fast shipping straight to your door.