Aguila Centerfire 5.56x45mm FMJ BT Ammo - 300 Rounds for Precision Shooting

The Aguila Centerfire 5.56x45mm FMJ BT ammo is a 55-grain full metal jacket boat tail round built for shooters who want to run volume downrange without sacrificing consistency. Sold in convenient 300-round boxes, this is the kind of ammunition that rewards frequent trips to the range—whether you're dialing in a new rifle, running drills on steel, or working on precision at distance. The boat tail design and full metal jacket construction give you the ballistic stability and reliable feeding that modern tactical and sporting rifles demand.

At 3,260 feet per second from the muzzle, this round delivers the kind of flat trajectory and velocity retention that makes 5.56 practical for both close-quarters work and medium-range precision shooting. The 55-grain weight is a classic option for the cartridge, proven across decades of military and civilian use, and the consistent powder charge ensures round-to-round performance you can count on. For shooters running AR-15s, M16-pattern rifles, or any 5.56 NATO–chambered platform, this is dependable, no-nonsense ammunition.

A 300-round box strikes the balance between practical inventory and serious trigger time. Buy it once and you've got enough to run a comprehensive range session, test different load distances, or simply practice the fundamentals without rationing. Aguila ammunition has earned respect in the shooting community for delivering solid quality at sensible volumes—this load is no exception.

Key Features

• 55-grain full metal jacket boat tail design for ballistic efficiency and consistent velocity
• Centerfire 5.56x45mm NATO chambering—compatible with standard AR-15 and M16-pattern rifles
• 3,260 fps muzzle velocity with strong energy retention downrange
• 300-round bulk packaging for extended range sessions and volume shooting
• Reliable feeding and consistent performance across modern rifles

Specifications

Frequently Asked Questions

What rifles does 5.56x45mm ammo work in?

This ammunition is chambered in 5.56x45mm NATO and will function in any rifle designed for that cartridge, including AR-15s, M16-pattern rifles, and modern sporting rifles marked for 5.56 NATO. Always verify your rifle's chamber marking before loading.

Is this ammo suitable for precision shooting at distance?

The 55-grain boat tail design and consistent velocity make this round capable of good accuracy. It retains 2,929 ft/sec at 100 yards and will perform well for range shooting and target work. Performance at longer distances depends on your specific rifle, optics, and shooting conditions.

How much ammo is in each box?

Each box contains 300 rounds. Cases contain 1,200 rounds (four 300-round boxes), making bulk purchasing convenient for regular shooters.

What's included in the 300-round box?

You receive 300 rounds of loaded 5.56x45mm ammunition. No components, brass, or accessories are included—just the ready-to-fire rounds.