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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. RVI Partizan 5.56x45 M193 FMJBT 55gr 200 Round Battle Pack - PPN556

    RVI Partizan 5.56x45 M193 FMJBT 55gr 200 Round Battle Pack - PPN556

    Rating:
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    (6)
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  2. Prvi Partizan 5.56 M855 62 gr 1000 Round Ammo Can - PPN5562MC

    Prvi Partizan 5.56 M855 62 gr 1000 Round Ammo Can - PPN5562MC

    Rating:
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    (3)
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  3. Federal Independence 5.56x45mm 62gr FMJ Ammunition, 20 Rounds

    Federal Independence 5.56x45mm 62gr FMJ Ammunition, 20 Rounds – XM855I

    Rating:
    97%
    (69)
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  4. American Eagle 5.56mm 62gr FMJ Steel Core Ammunition, 1000 Rounds

    American Eagle 5.56mm 62gr FMJ Steel Core Ammunition, 1000 Rounds - XM855CSF

    Rating:
    96%
    (395)
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  5. Federal 5.56mm 62gr XM855 Ammunition, 800 Rounds

    Federal 5.56mm 62gr XM855 Ammunition, 800 Rounds - XM855LPCC800

    Rating:
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  6. MAGTECH/CBC 5.56mm XM193 55gr FMJ 1000 Round Ammo Can - 556MIL

    MAGTECH/CBC 5.56mm XM193 55gr FMJ 1000 Round Ammo Can - 556MIL

    Rating:
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  7. Prvi Partizan 5.56 55GR Ammo

    PRVI Partizan 5.56mm M193 55gr FMJBT Ammunition 20 Round Box - PPN5561

    Rating:
    97%
    (6)
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  8. 5.56 Rifle Ammo american eagle 5.56mm 55 grain FMJ ammo a150 rounds

    American Eagle 5.56mm 55gr FMJ Ammunition 150rds - XM193BK150

    Rating:
    96%
    (606)
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  9. Black Hills 5.56mm 70gr GMX Ammunition 50rds - D556N3

    Black Hills 5.56mm 70gr GMX Ammunition 50rds - D556N3

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  10. Black Hills 5.56mm 62gr Barnes TSX Ammunition 50rds - D556N18

    Black Hills 5.56mm 62gr Barnes TSX Ammunition 50rds - D556N18

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  11. Black Hills 5.56mm 69gr OTM (Open Tip Match) Ammunition 50rds - D556N12

    Black Hills 5.56mm 69gr OTM (Open Tip Match) Ammunition 50rds - D556N12

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  12. Black Hills 5.56mm 77gr Sierra TMK Ammunition 50rds - D556N19

    Black Hills 5.56mm 77gr Sierra TMK Ammunition 50rds - D556N19

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  13. PRVI Partizan 5.56x45mm M855 62gr Ammunition, 1000 Round Case - PP5.6

    PRVI Partizan 5.56x45mm M855 62gr Ammunition, 1000 Round Case - PP5.6

    Rating:
    80%
    (2)
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  14. American Eagle 5.56 Ammo

    American Eagle Rifle 5.56x45mm FMJ-BT 90 Rounds Ammunition on Stripper Clips - XM193AF90

    Rating:
    97%
    (127)
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  15. 5.56 Rifle Rounds federal 5.56 nato 55 grain fmj ammo can with 420 rounds

    Federal 5.56 NATO 55gr FMJ 420rds in Ammo Can - XM193LC1 AC1

    Rating:
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    (471)
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  16. 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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  17. 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%
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  18. 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:
    95%
    (471)
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  19. American Eagle Training 55gr FMJBT 5.56 NATO Ammo

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

    Rating:
    96%
    (17)
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  20. Prvi Partizan 5.56 Battle Pack

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

    Rating:
    90%
    (2)
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  21. 5.56 Rifle Ammo Loose pack of american eagle 5.56mm 55 grain fmjbt ammo

    Federal American Eagle 5.56mm 55gr FMJBT Ammunition 1000rds Loose Pack - XM193BK

    Rating:
    95%
    (826)
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  22. American Eagle 5.56mm 62gr FMJBT Ball Ammunition 20rds - XM855F

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

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  23. Federal 5.56 Ammo

    Federal 5.56mm 55gr MCBT Ammunition 20rds - XM193F

    Rating:
    100%
    (2)
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  24. PRVI Partizan 5.56x45mm 55gr M193 FMJBT Ammunition, 1000 Round Case

    PRVI Partizan 5.56x45mm 55gr M193 FMJBT Ammunition, 1000 Round Case - PP5.2

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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.