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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. Federal American Eagle 55 gr FMJ-BT 5.56x45 Ammunition 420 Rounds

    Federal American Eagle 55 gr FMJ-BT 5.56x45 Ammunition 420 Rounds - XM193BK420 AC1X

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    (3)
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  2. Federal American Eagle Training 55 gr FMJ 5.56x45 Ammunition 100 Rounds

    Federal American Eagle Training 55 gr FMJ 5.56x45 Ammunition 100 Rounds - XM193BLX

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    (23)
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  3. Federal American Eagle 55 gr FMJ-BT 5.56x45 Ammunition 20 Rounds

    Federal American Eagle 55 gr FMJ-BT 5.56x45 Ammunition 20 Rounds - XM193X

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  4. Winchester M855 62 gr FMJ 5.56x45mm Ammunition 500 Rounds

    Winchester M855 5.56 Bulk Ammo 62 Gr FMJ Green Tip 500rds - WM855500

    Rating:
    95%
    (46)
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  5. Federal XM855 62 Grain FMJBT 5.56 Ammo, 475rds - BPXM855LC1BL

    Federal XM855 62 Grain FMJBT 5.56 Ammo, 475rds - BPXM855LC1BL

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  6. GECO 5.56 NATO 55 Grain FMJ 50rd White Box

    GECO 5.56 NATO 55 Grain FMJ 50rd White Box - 455650050

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  7. Sellier & Bellot Tactical 5.56 55gr FMJ Ammunition, 20rds - SB556A

    Sellier & Bellot Tactical 5.56 55gr FMJ Ammunition, 20rds - SB556A

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  8. Hornady Frontier Rifle 5.56 NATO 55 GR Hollow Point Match 50 Rounds

    Hornady Frontier Rifle 5.56 NATO 55 GR Hollow Point Match 50 Rounds - FR2405

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  9. Hornady Frontier 55 gr FMJ 5.56 Ammo, 50/box - FR2005

    Hornady Frontier 55 gr FMJ 5.56 Ammo, 50/box - FR2005

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  10. Federal American Eagle 5.56 62gr FMJ-BT 420rd Loose M2A1 Ammo Can - XM855BK420 AC1

    Federal American Eagle 5.56 62gr FMJ-BT 420rd Loose M2A1 Ammo Can - XM855BK420 AC1

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  11. Hornady Frontier 5.56 55gr FMJ 500 Rounds - FR204

    Hornady Frontier 5.56 55gr FMJ 500 Rounds - FR204

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  12. Geco Target 55 gr Full Metal Jacket 5.56 Ammo, 50/box - 278140050

    Geco Target 55 gr Full Metal Jacket 5.56 Ammo, 50/box - 278140050

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  13. Hornady Superformance Match 73 gr ELD-Match 5.56 Ammo, 20/box - 81268

    Hornady Superformance Match 73 gr ELD-Match 5.56 Ammo, 20/box - 81268

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  14. Hornady Frontier 55 gr Hollow Point Match 5.56 Ammo, 150/box - FR2415

    Hornady Frontier 55 gr Hollow Point Match 5.56 Ammo, 150/box - FR2415

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  15. Hornady Frontier 55 gr Hollow Point Match 5.56 Ammo, 20/box - FR240

    Hornady Frontier 55 gr Hollow Point Match 5.56 Ammo, 20/box - FR240

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  16. Magtech 62 gr First Defense Tactical 5.56 Ammo FMJ, 50/box - 556B

    Magtech 62 gr First Defense Tactical 5.56 Ammo FMJ, 50/box - 556B

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  17. Barnes Bullets Range AR 52 gr Open Tip Flat Base 5.56 Ammo, 20/box - 30844

    Barnes Bullets Range AR 52 gr Open Tip Flat Base 5.56 Ammo, 20/box - 30844

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  18. Aguila Centerfire 5.56x45mm 55 grain Full Metal Jacket Boat Tail Rifle Ammo, 300/Box - 1E556126

    Aguila Centerfire 5.56x45mm 55 grain Full Metal Jacket Boat Tail Rifle Ammo, 300/Box - 1E556126

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  19. American Eagle Rifle 5.56 62 gr FMJBT 120 Rounds Ammunition - XM855 LPC120

    American Eagle Rifle 5.56 62 gr FMJBT 120 Rounds Ammunition - XM855 LPC120

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  20. Fiocchi Shooting Dynamics 5.56x45 55 gr FMJBT 50 Rounds Ammunition - 556M193L

    Fiocchi Shooting Dynamics 5.56x45 55 gr FMJBT 50 Rounds Ammunition - 556M193L

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  21. 5.56mm Rifle

    American Eagle 5.56x45 62 gr FMJ 90 Rounds on Stripper Clips - XM855AF90

    Rating:
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  22. Hornady Frontier 5.56 Ammo

    Hornady Frontier 5.56 NATO 62gr Spire Point 20 Rounds Ammunition - FR280

    Rating:
    80%
    (7)
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  23. 5.56 Rifle Rounds

    Hornady Frontier 5.56 55gr M193 1000 Round Bulk Ammunition Case - FR206

    Rating:
    96%
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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.