Atomic Ammunition 04959 Rifle Subsonic 5.56 125Gr Round Nose 20Rd Bx

Atomic Ammunition 5.56 subsonic rifle rounds deliver a specialized solution for shooters prioritizing hearing safety and noise signature reduction without sacrificing reliability. This 5.56 subsonic load uses a 125-grain round nose projectile designed to keep velocity below the sound barrier, making it an ideal choice for suppressed rifle work, hearing-protection-free practice sessions, or situations where noise discipline matters. Each box contains 20 rounds, allowing you to stock up for range days or training without breaking the bank.

Subsonic 5.56 ammunition has become popular among AR-15 owners and other modern rifle shooters who've invested in suppressors or who simply want to reduce report at the range. The round nose profile offers a different ballistic character than typical hollow points or boat-tail designs, which some shooters prefer for specific applications. Whether you're running suppressed drills, practicing at indoor facilities with noise limits, or just tired of ear fatigue, subsonic loads give you that option in a mainstream rifle cartridge.

Atomic Ammunition has built a reputation for consistent, dependable rounds at accessible pricing. This subsonic offering maintains that standard, delivering reliable feeding and ignition in AR-pattern rifles and other 5.56-chambered platforms. Stock up by the box for regular training, or pick up multiple boxes to establish a subsonic practice load you trust.

Key Features

• 5.56 NATO subsonic load designed for reduced noise signature
• 125-grain round nose bullet profile
• 20 rounds per box for convenient stocking
• Reliable performance in AR-15s and other 5.56-chambered rifles
• Well-suited for suppressed shooting and hearing-safe practice

Specifications

Frequently Asked Questions

Will subsonic 5.56 ammunition work in my standard AR-15?

Yes. Subsonic 5.56 rounds are loaded to work in any rifle chambered in 5.56 NATO or .223 Remington. The subsonic velocity designation refers to the muzzle velocity, not the cartridge itself, so feeding and extraction remain normal.

What is subsonic ammunition, and why would I use it?

Subsonic ammunition is loaded to travel below the speed of sound (roughly 1,125 fps in standard conditions), which means the bullet itself doesn't create a sonic crack when it travels downrange. This significantly reduces noise signature, especially when fired through a suppressor, and allows you to shoot without hearing protection in many cases.

How many rounds come in each purchase?

This product contains 20 rounds per box.

What's the bullet weight and style?

This load features a 125-grain round nose bullet, which has a traditional rounded profile rather than a hollow point or boat-tail shape.