Federal American Eagle ammunition in 5.56x45mm NATO (part no. AE193) loads a 55-grain full metal jacket bullet built for high-volume shooting through AR-platform rifles. Federal Ammunition designed American Eagle around dependable feeding and consistent brass-cased quality, the fundamentals that matter most when a rifle is cycling hundreds of rounds in a single range session. The standard 55-grain weight is the baseline most AR-15s are built and sighted around, making this a safe default for practice, competition prep, or simply keeping a well-used rifle fed. This rifle ammunition is one of the most recognized range loads for the platform for exactly that reason.

Key Specifications

• The chambering is 5.56x45mm NATO/.223 Remington, the standard AR-platform rifle cartridge.
• The bullet weighs 55 grains, the baseline weight most AR-15s are built and sighted around.
• The bullet type is full metal jacket, built for reliable feeding at high volume rather than expansion.
• The case material is brass, giving reliable extraction and standard reloading compatibility.
• A box ships at about 0.52 lb, a manageable addition to any order.
• Each box holds 20 rounds, a practical count for a range session.
• Twenty-five boxes ship per case, letting AR shooters buy by the case for the best per-round value.
• Cost runs about $0.67 per round, competitive pricing for a name-brand brass-cased 5.56 load.
• Federal markets this under its American Eagle line, built specifically for AR-platform practice.

Frequently Asked Questions

Is this ammunition safe to shoot in a 5.56 or .223 chamber? It is loaded to 5.56x45mm NATO specification, which is safe to fire in rifles chambered in either 5.56 NATO or .223 Remington.

Is 55-grain the standard AR-15 bullet weight? Yes, 55 grains is the original and most common .223/5.56 bullet weight, and most AR-15 barrels are rifled and sighted with that weight in mind.

Buy Federal American Eagle 5.56 55gr

An AR-platform rifle earns its keep on the range, and American Eagle exists to keep it fed reliably, magazine after magazine. Order from our Lubbock, Texas gun shop and it ships fast to your door.