Atomic‘s rifle ammunition in 5.56x45mm loads a 62-grain full metal jacket bullet, sold here as a full 500-round bulk case for AR-platform shooters who put serious volume through their rifles. Packaged in 50-round boxes rather than a standard 20-count, this bulk case is built specifically for range days and training sessions where reloading magazines from a small box gets old fast. The 62-grain FMJ is a heavier-than-standard 5.56 weight, matching the bullet weight most modern AR-15 barrels are twisted to stabilize well. For 5.56 shooters who want to stock up once and shoot for months, this rifle ammunition keeps the range bag full.

Key Specifications

• The chambering is 5.56x45mm / .223 Remington, the standard AR-platform service cartridge.
• The bullet weighs 62 grains, a heavier-than-standard 5.56 weight for modern barrel twist rates.
• The bullet is a full metal jacket, built for high-volume range and training use.
• Each individual box holds 50 rounds, more than a standard 20-count range box.
• This listing is a full bulk case of 500 rounds, 10 boxes total.
• The effective cost works out to roughly $0.88 per round across the full bulk case.

Frequently Asked Questions

Why 62 grains instead of a lighter 55-grain bullet? It matches the bullet weight most modern AR-15 barrel twist rates are built to stabilize best.

How is this bulk case packaged? In 50-round boxes rather than a standard 20-count, built for range days and training sessions with less reloading downtime.

Buy Atomic 5.56x45mm 62gr FMJ 500-Round Bulk Case

Serious range time means serious round counts, and this bulk case is built to keep an AR-15 fed without constant reordering. Order from our Lubbock, Texas gun shop and it ships fast to your door.