ATTENTION - DUE TO DEMAND, CURRENT LEAD TIME ON 9MM & .223/5.56 FMJ IS APPROX. 3 DAYS

5.56 Ammo | Fenix Ammo

Browse Fenix ammunition explicitly labeled 5.56 NATO or 5.56mm NATO in 55, 62, and 75 grain choices. Documented product labels include FMJBT, FXP VMAX, and FXP HPBT in 100 and 250 count packages. Some of these SKUs also carry .223 Remington wording and can independently qualify for the .223 collection under its separate labeling rule. Dual catalog placement is not a universal interchangeability claim, so follow the ammunition designation and guidance provided by your firearm manufacturer.

4 products
.223 Remington/5.56mm 62gr FMJBT (250 ct.)
.223 Remington/5.56mm 62gr FMJBT (250 ct.)
$125.00
.223 Remington/5.56mm 75gr FXP (HPBT) (100 ct.)
.223 Remington/5.56mm 75gr FXP (HPBT) (100 ct.)
$94.50
.223 Remington/5.56mm 55gr FMJBT (250 ct.)
.223 Remington/5.56mm 55gr FMJBT (250 ct.)
$115.00
.223 Remington/5.56mm 55gr FXP (VMAX) (100 ct.)
.223 Remington/5.56mm 55gr FXP (VMAX) (100 ct.)
$93.75 Sold out

Read the 5.56 Product Labels

Fenix documents 5.56-labeled products at 55, 62, and 75 grains. The 55 grain products are labeled FMJBT and FXP VMAX, while the 62 grain product is FMJBT and the 75 grain product is FXP HPBT. Package quantity adds another distinction: the FMJBT products use 250 count packages, and the two FXP products use 100 count packages. Grain, projectile wording, and count are independent attributes, so compare all three for the exact load. These labels describe the catalog choices without assigning unsupported performance or firearm compatibility conclusions.

Why 5.56 and .223 Remain Separate

This collection requires explicit 5.56 NATO or 5.56mm NATO product evidence. The .223 Ammo collection separately requires explicit .223 Remington evidence. A Fenix SKU carrying both labels can satisfy each rule independently, which allows it to appear in both collections without merging their search intent. Shared labeling does not establish universal cartridge or chamber interchangeability. Use the designation marked for your firearm and follow its manufacturer's guidance rather than making a selection from a similar caliber name alone.

Frequently Asked Questions

Which grain weights and labels are included in this 5.56 collection?

The documented assortment includes 55, 62, and 75 grain products with FMJBT, FXP VMAX, and FXP HPBT labels.

What package quantities are documented for Fenix 5.56 ammo?

The 55 grain and 62 grain FMJBT products use 250 count packages. The 55 grain FXP VMAX and 75 grain FXP HPBT products use 100 count packages.

Does dual .223 Remington and 5.56 labeling mean universal interchangeability?

No. Dual labeling allows a Fenix SKU to qualify independently for both collections, but it does not establish universal firearm or chamber compatibility. Follow your firearm manufacturer's designation and guidance.