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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. Prvi Partizan Rangemaster 5.56 Bulk Ammo 55 Gr FMJBT, 1000rds - PPRM5561M

    Prvi Partizan Rangemaster 5.56 Bulk Ammo 55 Gr FMJBT, 1000rds - PPRM5561M

    Regular Price $688.99 Special Price $619.99 $0.62
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  2. PPU Rangemaster 55 gr FMJBT 5.56x45 Ammunition 20 Rounds

    PPU Rangemaster 55 gr FMJBT 5.56x45 Ammunition 20 Rounds - PPRM5561

    Rating:
    87%
    (3)
    Regular Price $13.99 Special Price $11.99 $0.60
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  3. 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

    Rating:
    100%
    (2)
    $30.99 $0.62
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  4. Hornady Frontier 55 gr FMJ 5.56 Ammo, 50/box - FR2005

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

    Rating:
    100%
    (3)
    $27.99 $0.56
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  5. Winchester 5.56 Bulk Ammo 55 gr FMJ 200rds

    Winchester USA 5.56 Bulk Ammo 55 Grain FMJ 200rds - WM193200

    Rating:
    96%
    (225)
    Regular Price $129.99 Special Price $119.99 $0.60
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  6. 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

    Regular Price $94.99 Special Price $84.99 $0.57
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  7. 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

    Rating:
    100%
    (9)
    $12.99 $0.65
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  8. Barnes Bullets Precision 85 gr Open Tip Match Boat Tail 5.56 Ammo, 20/box - 30848

    Barnes Bullets Precision 85 gr Open Tip Match Boat Tail 5.56 Ammo, 20/box - 30848

    Rating:
    70%
    (2)
    Regular Price $36.99 Special Price $32.99 $1.65
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  9. Barnes Bullets VOR-TX 62 gr TSX Boat Tail 5.56 Ammo, 20/box - 31190

    Barnes Bullets VOR-TX 62 gr TSX Boat Tail 5.56 Ammo, 20/box - 31190

    Rating:
    100%
    (1)
    Regular Price $36.99 Special Price $32.99 $1.65
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  10. Barnes Bullets VOR-TX 70 gr TSX Boat Tail 5.56 Ammo, 20/box - 31191

    Barnes Bullets VOR-TX 70 gr TSX Boat Tail 5.56 Ammo, 20/box - 31191

    Rating:
    100%
    (5)
    Regular Price $36.99 Special Price $32.99 $1.65
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  11. Barnes Bullets Precision 69 gr Open Tip Match Boat Tail 5.56 Ammo, 20/box - 30846

    Barnes Bullets Precision 69 gr Open Tip Match Boat Tail 5.56 Ammo, 20/box - 30846

    Rating:
    100%
    (2)
    Regular Price $35.99 Special Price $31.99 $1.60
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  12. 5.56 Rifle Ammo

    Hornady Frontier 5.56 Nato 68gr BTHP Match 20 Rounds - FR310

    Rating:
    94%
    (10)
    $13.99 $0.70
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  13. Hornady T2 Frontier 5.56 NATO 75 Grain BTHP Match Ammunition, 20rds

    Hornady T2 Frontier 5.56 NATO 75 Grain BTHP Match Ammunition, 20rds - FR320

    Rating:
    96%
    (37)
    $15.99 $0.80
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  14. Hornady Black 75 gr InterLock HD 5.56 Ammo

    Hornady Black 75 gr InterLock HD 5.56 Ammo, 20rds/box – 81296

    Rating:
    97%
    (12)
    $25.99 $1.30
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  15. 5.56 Rifle Rounds Hornady Black 5.56 Nato 62gr FMJ Centerfire Rifle Ammunition

    Hornady Black 5.56 Ammo 62 Gr FMJ, 20rds - 81263

    Rating:
    100%
    (10)
    $19.99 $1.00
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  16. PMC X-TAC 5.56 62 gr Ammo, 120/Battle Pack - 5.56K-BP

    PMC X-TAC 5.56 62 gr Ammo, 120/Battle Pack - 5.56K-BP

    Rating:
    96%
    (83)
    Regular Price $89.99 Special Price $74.99 $0.62
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  17. Magtech 5.56x45mm Ammo

    Magtech 5.56x45mm 55gr FMJ M193 50 Rounds Ammunition - 556A

    Rating:
    100%
    (3)
    Regular Price $29.99 Special Price $26.79 $0.54
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  18. 5.56 Rifle Ammo

    Hornady Superformance Match 5.56 Ammo 75 Gr BTHP 20rds - 81264

    Rating:
    97%
    (7)
    $29.99 $1.50
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  19. Winchester USA Valor 62 gr FMJ M855 5.56x45 Ammunition, 125 Rounds - USA855125

    Winchester USA Valor 62 gr FMJ M855 5.56x45 Ammunition, 125 Rounds - USA855125

    Rating:
    99%
    (33)
    Out of Stock
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  20. Federal American Eagle 62 GR FMJBT 5.56 Ammo

    Federal American Eagle 62 GR FMJBT 5.56 Ammo, 20rds/box - XM855FL

    Rating:
    98%
    (23)
    Out of Stock
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  21. Federal 5.56 55gr FMJ-BT 400rd Ammo Can

    Federal 5.56 55gr FMJ-BT 400rd Ammo Can - XM193ML1

    Rating:
    95%
    (31)
    Out of Stock
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  22. Federal American Eagle 5.56x45mm NATO 62gr FMJ 820rd Ammo Can - ZSAM855MOI

    Federal American Eagle 5.56x45mm NATO 62gr FMJ 820rd Ammo Can - ZSAM855MOI

    Rating:
    94%
    (65)
    Out of Stock
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  23. Federal American Eagle 5.56 55gr FMJ-BT 420rd M2A1 Ammo Can - XM193bk420 AC1

    Federal American Eagle 5.56 55gr FMJ-BT 420rd M2A1 Ammo Can - XM193bk420 AC1

    Rating:
    93%
    (32)
    Out of Stock
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  24. Prvi Partizan 5.56x45 M855 62 gr FMJBT 20 Rounds Ammunition - PPN5562

    Prvi Partizan 5.56x45 M855 62 gr FMJBT 20 Rounds Ammunition - PPN5562

    Out of Stock
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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.