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5.56 Ammo

Stock up on 5.56 ammo from leading brands for your AR-15 rifle and other rifles. Whether you're training, target shooting, or preparing for defense, we offer 5.56 bulk ammo options at great prices. Enjoy fast shipping and reliable performance for all ammo sold at PSA.

55 Grain 5.56

55 Grain 5.56
62 Grain 5.56

62 Grain 5.56
77 Grain 5.56

77 Grain 5.56
.223

.223
Bulk 5.56

Bulk 5.56
AR-15 Magazines

AR-15 Magazines
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  1. American Eagle 5.56 55gr Ammunition 120rds Mini-Can - - XM193LPC120

    American Eagle 5.56 55gr Ammunition 120rds Mini-Can - - XM193LPC120

    Rating:
    93%
    (3)
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  2. 5.56 Rifle Ammo Federal 5.56mm NATO 55GR FMJ XM193

    Federal 5.56mm NATO 55gr FMJ-BT Ammunition, 20 Round Box - XM193

    Rating:
    97%
    (580)
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  3. 5.56 Rifle Ammo federal 5.56mm 62 grain fmjbt steel core ammunition 420 rounds on stripper clips with ammo can

    Federal 5.56mm 62gr FMJBT Steel Core Ammunition 420rds on Stripper Clips w/Ammo Can - XM855LC1 AC1

    Rating:
    96%
    (803)
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  4. American Eagle Training 55gr FMJBT 5.56 NATO Ammo

    American Eagle Training 55gr FMJBT 5.56 NATO Ammo, 100/box - XM193BL

    Rating:
    96%
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  5. Prvi Partizan 5.56 Battle Pack

    PRVI Partizan 5.56mm M855 Ammunition 200rd Battle Pack - PPN5562BP

    Rating:
    90%
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  6. American Eagle 5.56mm 62gr FMJBT Ball Ammunition 20rds - XM855F

    American Eagle 5.56mm 62gr FMJBT Ball Ammunition 20rds - XM855F

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  7. Federal 5.56 Ammo

    Federal 5.56mm 55gr MCBT Ammunition 20rds - XM193F

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  8. Hyperion Veteran M193 5.56 55gr FMJ Ammo, 50rds - HMBX5565550

    Hyperion Veteran M193 5.56 55gr FMJ Ammo, 50rds - HMBX5565550

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  9. AAC "Sabre Blade Black Tip" 5.56 NATO 55 Grain Ammo 250rds With AAC Blue 30 Cal Ammo Can

    AAC "Sabre Blade Black Tip" 5.56 NATO 55 Grain Ammo 250rds With AAC Blue 30 Cal Ammo Can

    Rating:
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  10. Scorpion Ammo 5.56x45 55gr FMJ 20rd - 556055FMJ-T20

    Scorpion Ammo 5.56x45 55gr FMJ 20rd - 556055FMJ-T20

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  11. Magtech CBC 5.56mm NATO 62grFMJ Ammunition 50rds - CBC556B

    Magtech CBC 5.56mm NATO 62grFMJ Ammunition 50rds - CBC556B

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  12. AAC 5.56 NATO 55 Grain FMJ Shell Shock Ammo 250rd With AAC Blue 30 Cal Ammo Can

    AAC 5.56 NATO 55 Grain FMJ Shell Shock Ammo 250rd With AAC Blue 30 Cal Ammo Can

    Rating:
    97%
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  13. PMC 5.56x45mm 62 gr FMJ 1680rds

    PMC 5.56x45mm 62 gr FMJ 1680rds

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  14. Winchester Ammunition USA 5.56x45mm 62 gr FMJ 100rds

    Winchester Ammunition USA 5.56x45mm 62 gr FMJ 100rds

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  15. Winchester Ammunition USA 5.56x45mm 55 gr FMJ 100rds

    Winchester Ammunition USA 5.56x45mm 55 gr FMJ 100rds

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  16. PPU USA 5.56x45mm *2000RDS PER CASE*

    PPU USA 5.56x45mm *2000RDS PER CASE*

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  17. PPU USA 5.56x45mm 20rds

    PPU USA 5.56x45mm 20rds

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  18. Ammo Inc Target and Range 5.56x45mm 55 gr FMJ 20rds

    Ammo Inc Target and Range 5.56x45mm 55 gr FMJ 20rds

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  19. PMC 5.56x45mm 55 gr FMJ 1680rds

    PMC 5.56x45mm 55 gr FMJ 1680rds

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  20. Century Arms MKE 5.56x45mm 62 gr FMJ 2250rds

    Century Arms MKE 5.56x45mm 62 gr FMJ 2250rds

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  21. Sons of Liberty Gun Works 5.56x45mm 62 gr BTSP 50rds

    Sons of Liberty Gun Works 5.56x45mm 62 gr BTSP 50rds

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  22. Sons of Liberty Gun Works 5.56x45mm 62 gr FMJ 50rds

    Sons of Liberty Gun Works 5.56x45mm 62 gr FMJ 50rds

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    60%
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Learn More About 5.56 Ammo

History of 5.56mm Ammo

Developed in the late 1950s by the U.S. Army, 5.56mm ammo was designed to be lighter and more versatile than previous .30 caliber rounds. Officially adopted by NATO in 1980, it became the standard military cartridge, known for its high velocity and low recoil. Originally paired with the M16 rifle, 5.56mm ammo remains popular for military, hunting, sport shooting, and self-defense.

Practical Uses for 5.56mm Ammo

5.56mm cartridges are ideal for target shooting, home defense, and varmint hunting. Their lightweight design allows for quick follow-up shots and mild recoil, making them accessible for all skill levels. The 5.56mm is especially popular in AR-15 platforms for its speed and effective fragmentation, minimizing over-penetration in home defense scenarios.

5.56mm Ammo Accuracy

Known for its accuracy, 5.56mm ammo offers a flat trajectory and high velocity (2,800–3,100 fps), making it effective at medium to long ranges. The boat-tail bullet design enhances aerodynamics, while various bullet weights (55–77 grains) allow shooters to tailor their ammo for short or long-range precision.

5.56mm Ballistics

The 5.56mm round delivers excellent ballistic performance, with high velocity for minimal bullet drop and effective stopping power. It often fragments on impact, causing significant internal damage, and can penetrate light barriers. While its power decreases beyond 500 yards, it remains a versatile choice for many shooting applications.

Affordability of 5.56mm Ammo

5.56mm ammo is cost-effective due to mass production for military and civilian use. It is more affordable than larger cartridges like .308 Winchester, making it ideal for frequent practice. Surplus military rounds are also widely available, offering even greater value for budget-conscious shooters.

Why Buy 5.56 Ammo from Palmetto State Armory?

Palmetto State Armory provides high-quality 5.56 ammo at competitive prices. With a wide selection and fast shipping, you can count on us for reliable ammunition for all your shooting needs.