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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. Hornady Frontier XM193 5.56 NATO 55 Grain FMJ Ammo Can, 200 Rd - FR602

    Hornady Frontier XM193 5.56 NATO 55 Grain FMJ Ammo Can, 200 Rd - FR602

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

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

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  3. Federal American Eagle 55gr 5.56x45 FMJ 20rd - FEDEAE193

    Federal American Eagle 55gr 5.56x45 FMJ 20rd - FEDEAE193

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

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

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  5. PMC 5.56x45mm 62 gr FMJ 1680rds

    PMC 5.56x45mm 62 gr FMJ 1680rds

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

    Winchester Ammunition USA 5.56x45mm 62 gr FMJ 100rds

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

    Winchester Ammunition USA 5.56x45mm 55 gr FMJ 100rds

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  8. PPU USA 5.56x45mm 20rds

    PPU USA 5.56x45mm 20rds

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  9. 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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  10. PMC 5.56x45mm 55 gr FMJ 1680rds

    PMC 5.56x45mm 55 gr FMJ 1680rds

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  11. 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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  12. Aguila 5.56x45mm 55 gr FMJ 30rds

    Aguila 5.56x45mm 55 gr FMJ 30rds

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  13. WInchester 5.56mm M193 55gr FMJ 300rds Plastic Ammo Can - WM193300C

    WInchester 5.56mm M193 55gr FMJ 300rds Plastic Ammo Can - WM193300C

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  14. Ammo Inc 5.56x45mm M193 55gr 200rd Ammo Can - 556055M193-TR200

    Ammo Inc 5.56x45mm M193 55gr 200rd Ammo Can - 556055M193-TR200

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  15. Ammo Inc Signature 5.56mm 55 Grain M193 FMJ Brass Cased Rifle Ammo, 20 Round - 556055M193-A20

    Ammo Inc Signature 5.56mm 55 Grain M193 FMJ Brass Cased Rifle Ammo, 20 Round - 556055M193-A20

    Rating:
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  16. Sellier & Bellot Ammunition M193 5.56x45mm 55 gr FMJ 1000rds

    Sellier & Bellot Ammunition M193 5.56x45mm 55 gr FMJ 1000rds

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  17. Winchester USA 5.56x45mm 55 gr FMJ 14000rds/Drum

    Winchester USA 5.56x45mm 55 gr FMJ 14000rds/Drum

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  18. Winchester USA 5.56x45mm 55 gr FMJ 1000rds/Case

    Winchester USA 5.56x45mm 55 gr FMJ 1000rds/Case

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  19. Winchester USA 5.56x45mm 55 gr FMJ 420rds

    Winchester USA 5.56x45mm 55 gr FMJ 420rds

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  20. Hornady American Gunner 5.56x45mm 55 gr HP 247rds

    Hornady American Gunner 5.56x45mm 55 gr HP 247rds

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  21. Winchester Ammo 5.56mm M193 55gr FMJ 500rd - SGM193500

    Winchester Ammo 5.56mm M193 55gr FMJ 500rd - SGM193500

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  22. Norma Range/Training 5.56x45mm 62 gr FMJ 10rds Rifle Ammo for Practice - 701706154

    Norma Range/Training 5.56x45mm 62 gr FMJ 10rds Rifle Ammo for Practice - 701706154

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  23. PPU USA RangeMaster 5.56x45mm 55 gr FMJBT 125rds Rifle Ammo for High-Volume Training - PPRM5561P

    PPU USA RangeMaster 5.56x45mm 55 gr FMJBT 125rds Rifle Ammo for High-Volume Training - PPRM5561P

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  24. PMC X-Tac 5.56 NATO 62gr Green Tip LAP 840rds w/ Bandoleer in M2A1 Ammo Can - 5.56(M855)(M/B)

    PMC X-Tac 5.56 NATO 62gr Green Tip LAP 840rds w/ Bandoleer in M2A1 Ammo Can - 5.56(M855)(M/B)

    Rating:
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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.