Federal 5.56 Ammo 420 Rounds for Sale
(1)
Federal American Eagle 5.56 62gr FMJ-BT 420rd Loose M2A1 Ammo Can - XM855BK420 AC1
Brand:
Federal
Barrel Length:
18.5\"
Bullet Type:
Full Metal Jacket
Caliber:
5.56×45mm NATO
Grains:
62 grain
Rounds:
420
(0)
Federal American Eagle 5.56 55gr FMJ-BT 420rd M2A1 Ammo Can - XM193bk420 AC1
Brand:
Federal
Bullet Type:
FMJBT
Caliber:
5.56×45mm NATO
Grains:
55 grain
Rounds:
420
(20)
Federal 5.56mm 62gr FMJBT Steel Core Ammunition 420rds on Stripper Clips w/Ammo Can - XM855LC1 AC1
Brand:
Federal
Bullet Type:
Full Metal Jacket Boat-Tail
Caliber:
5.56×45mm NATO
Grains:
62 grain
Rounds:
420
Marketplace Insights
★ 4.8/5
based on 21 customer reviews across 3 variants from 13 retailers
Highly rated 5.56 ammunition praised for reliability, convenient stripper-clip loading, and reusable can packaging, with only occasional concerns about grouping accuracy and range restrictions.
What customers like
Stripper clips convenience33%
Already loaded onto stripper clips and cardboard sleeves
Reliability and performance29%
Never any failures every round I have shot fires
Reusable metal ammo can29%
the can, the clips, the sleeves...TOTALLY REUSABLE
Value and pricing24%
Great ammo, great value. Highly recommended.
Packaging and shipping19%
packing and shipping was prompt and secure
Common concerns
Poor grouping accuracy10%
it doesn't group well out of two different rifles
Range restriction policy5%
no range will let you shoot this stuff there
Frequently Asked Questions
Federal 5.56 Ammo 420 Rounds for Sale
Is 5.56 NATO and 5.56 X45 the same?
Yes, 5.56x45 and 5.56 NATO are the same cartridge. The "x45" refers to the case length in millimeters. Note that 5.56 NATO runs at higher pressure than .223 Remington, so always verify your rifle's chambering before shooting.
Does Federal still make 5.56 ammo?
Yes, Federal actively produces 5.56 NATO ammunition, primarily under their American Eagle line. Multiple variants are available from various retailers, though stock levels and pricing vary by load and seller.
What's better, 55gr or 62gr?
Neither is universally better—it depends on your barrel's twist rate. Lighter 55gr suits slower 1:12 twist barrels; heavier 62gr stabilizes better in faster 1:7 or 1:8 twist barrels and penetrates harder barriers. Match your ammo to your rifle's twist rate for best accuracy.
Is it illegal to own green tip 556?
Federal law permits civilians to own green tip 5.56 NATO ammo. Many shooting ranges ban it because the steel core damages their bullet traps. Some states impose additional restrictions, so check local laws before purchasing.