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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. PMC X-Tac 5.56 Ammo 55 Grain FMJ 200rds Sealed Battle Pack - 5.56X-BP

    PMC X-Tac 5.56 Ammo 55 Grain FMJ 200rds Sealed Battle Pack - 5.56X-BP

    Rating:
    95%
    (68)
    Regular Price $139.99 Special Price $119.99 $0.60
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  2. PMC X-Tac 5.56 Ammo

    PMC X-TAC 5.56 NATO Ammo 55 Grain FMJBT, 20 rds/box – 556X

    Rating:
    98%
    (498)
    Regular Price $11.99 Special Price $9.99 $0.50
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  3. PMC X-Tac 5.56 Ammo

    PMC X-Tac 5.56 Ammo 62 Gr LAP 20rds - 556k

    Rating:
    98%
    (664)
    Regular Price $13.99 Special Price $9.99 $0.50
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  4. Norma Range & Training 5.56 55gr FMJ, 250rd - 701703514

    Norma Range & Training 5.56 55gr FMJ, 250rd - 701703514

    Regular Price $169.99 Special Price $149.99 $0.60
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  5. 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:
    100%
    (3)
    $209.99 $0.84
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  6. PPU USA 5.56x45mm 20rds

    PPU USA 5.56x45mm 20rds

    Regular Price $14.99 Special Price $12.99 $0.65
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  7. Global Ordnance 5.56x45mm 55 gr FMJ 20rds

    Global Ordnance 5.56x45mm 55 gr FMJ 20rds

    Rating:
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    (1)
    Regular Price $14.99 Special Price $12.99 $0.65
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  8. Century Arms MKE 5.56x45mm 62 gr FMJ 2250rds

    Century Arms MKE 5.56x45mm 62 gr FMJ 2250rds

    Rating:
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    Regular Price $1,270.99 Special Price $1,154.99 $0.51
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  9. Sterling 5.56x45mm 55 gr FMJ 30rds

    Sterling 5.56x45mm 55 gr FMJ 30rds

    Rating:
    96%
    (18)
    Regular Price $18.99 Special Price $16.99 $0.57
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  10. Sons of Liberty Gun Works 5.56x45mm 62 gr FMJ 50rds

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

    Rating:
    60%
    (2)
    Regular Price $60.99 Special Price $54.99 $1.10
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  11. Sons of Liberty Gun Works 5.56x45mm 55 gr FMJ 50rds

    Sons of Liberty Gun Works 5.56x45mm 55 gr FMJ 50rds

    Regular Price $52.99 Special Price $47.99 $0.96
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  12. Aguila 5.56x45mm 55 gr FMJ 450rds

    Aguila 5.56x45mm 55 gr FMJ 450rds

    Rating:
    100%
    (3)
    Regular Price $257.99 Special Price $231.99 $0.52
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  13. Winchester Lake City 5.56x45mm 62 gr FMJ 20rds

    Winchester Lake City 5.56x45mm 62 gr FMJ 20rds

    Rating:
    100%
    (3)
    Regular Price $15.99 Special Price $13.99 $0.70
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  14. Federated Ordnance Foundation 5.56x45mm 55 gr FMJBT 20rds Rifle Ammo for Range Shooting - 556M193NA-55-FO

    Federated Ordnance Foundation 5.56x45mm 55 gr FMJBT 20rds Rifle Ammo for Range Shooting - 556M193NA-55-FO

    Rating:
    100%
    (2)
    Regular Price $11.99 Special Price $10.49 $0.52
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  15. 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:
    94%
    (7)
    Regular Price $549.99 Special Price $449.99 $0.54
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  16. AAC 5.56 NATO 55 Grain FMJ Ammo 250rd With AAC Blue 30 Cal Ammo Can

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

    Rating:
    99%
    (35)
    $169.99 $0.68
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  17. AAC "Sabre" 5.56 NATO 70 Grain SBX Solid Copper Hollow Point 20rd Box Ammunition

    AAC "Sabre" 5.56 NATO 70 Grain SBX Solid Copper Hollow Point 20rd Box Ammunition

    Rating:
    99%
    (16)
    $18.99 $0.95
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  18. Fort Scott Munitions Tumble Upon Impact 5.56 62 gr Ammo SBS - 20rds - 556062SBV1

    Fort Scott Munitions Tumble Upon Impact 5.56 62 gr Ammo SBS - 20rds - 556062SBV1

    Regular Price $36.99 Special Price $26.99 $1.35
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  19. Fort Scott Munitions Tumble Upon Impact 5.56 55 gr Ammo SCS - 20rds - 556055SCV

    Fort Scott Munitions Tumble Upon Impact 5.56 55 gr Ammo SCS - 20rds - 556055SCV

    Regular Price $29.99 Special Price $26.99 $1.35
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  20. AAC 5.56 Ammo 62 Grain FMJ 20rd Box

    AAC 5.56 Ammo 62 Grain FMJ 20rd Box

    Rating:
    98%
    (88)
    $11.49 $0.57
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  21. AAC "Sabre Blade Black Tip" 5.56 NATO 62 Grain 20rd Box Ammunition

    AAC "Sabre Blade Black Tip" 5.56 NATO 62 Grain 20rd Box Ammunition

    Rating:
    98%
    (141)
    $13.49 $0.67
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  22. AAC 5.56 NATO Ammo 69 Grain Sierra MatchKing HPBT w/ Cannelure 20rd Box

    AAC 5.56 NATO Ammo 69 Grain Sierra MatchKing HPBT w/ Cannelure 20rd Box

    Rating:
    88%
    (5)
    $16.99 $0.85
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  23. AAC 5.56 NATO 69 Grain OTM 20rd Box Ammunition

    AAC 5.56 NATO 69 Grain OTM 20rd Box Ammunition

    Rating:
    96%
    (39)
    $13.49 $0.67
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  24. AAC 5.56 Ammo 55 Grain FMJ 20rd Box - AAC556FMJ1-20

    AAC 5.56 Ammo 55 Grain FMJ 20rd Box - AAC556FMJ1-20

    Rating:
    98%
    (623)
    $10.99 $0.55
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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.