Menu
Close
Search
Search Log In Help Center
View Cart
Daily Deals
Clearance
Close
Daily Deals
Clearance
My Account
Help Center

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
View as Grid View List View

Items 1-24 of 182

Page
Set Descending Direction
  1. Hornady Frontier XM193 5.56 NATO 55 Grain FMJ Ammo Can, 150 Rds - FR602

    Hornady Frontier XM193 5.56 NATO 55 Grain FMJ Ammo Can, 150 Rds - FR602

    Rating:
    94%
    (18)
    Regular Price $99.99 Special Price $74.99 $0.50
    Add to Wish List Add to Compare
  2. 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)
    Regular Price $369.99 Special Price $319.99 $0.64
    Add to Wish List Add to Compare
  3. Winchester 5.56 Bulk Ammo 55 Gr FMJ 1000rds

    Winchester 5.56 Bulk Ammo 55 Gr FMJ, 1000rds - WM1931000

    Rating:
    96%
    (40)
    Regular Price $649.99 Special Price $529.99 $0.53
    Add to Wish List Add to Compare
  4. 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 $14.99 Special Price $9.99 $0.50
    Add to Wish List Add to Compare
  5. Hyperion Veteran M855 5.56 62gr FMJ Ammo, 50rds - HMBX5566250

    Hyperion Veteran M855 5.56 62gr FMJ Ammo, 50rds - HMBX5566250

    $39.99 $0.80
    Add to Wish List Add to Compare
  6. Hyperion Veteran M193 5.56 55gr FMJ Ammo, 50rds - HMBX5565550

    Hyperion Veteran M193 5.56 55gr FMJ Ammo, 50rds - HMBX5565550

    $29.99 $0.60
    Add to Wish List Add to Compare
  7. Federal American Eagle 5.56 55gr FMJ-BT Ammo, 100rds - AE193C

    Federal American Eagle 5.56 55gr FMJ-BT Ammo, 100rds - AE193C

    Regular Price $73.99 Special Price $65.99 $0.66
    Add to Wish List Add to Compare
  8. Federal American Eagle 55gr 5.56x45 FMJ 20rd - FEDEAE193

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

    Rating:
    100%
    (7)
    $12.99 $0.65
    Add to Wish List Add to Compare
  9. Global Ordnance 5.56x45mm 55 gr FMJ 20rds

    Global Ordnance 5.56x45mm 55 gr FMJ 20rds

    Rating:
    100%
    (1)
    Regular Price $13.99 Special Price $12.19 $0.61
    Add to Wish List Add to Compare
  10. Sterling 5.56x45mm 55 gr FMJ 30rds

    Sterling 5.56x45mm 55 gr FMJ 30rds

    Rating:
    96%
    (19)
    Regular Price $18.99 Special Price $16.89 $0.56
    Add to Wish List Add to Compare
  11. 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
    Add to Wish List Add to Compare
  12. Fort Scott Munitions Tumble Upon Impact 5.56 62gr SCS Ammo, 20rds - 556062SCV

    Fort Scott Munitions Tumble Upon Impact 5.56 62gr SCS Ammo, 20rds - 556062SCV

    Regular Price $29.99 Special Price $26.99 $1.35
    Add to Wish List Add to Compare
  13. 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
    Add to Wish List Add to Compare
  14. Hornady Superformance 5.56x45mm Ammunition, 20 Rounds CX 55Gr - 812544

    Hornady Superformance 5.56x45mm Ammunition, 20 Rounds CX 55Gr - 812544

    Rating:
    60%
    (1)
    $34.99 $1.75
    Add to Wish List Add to Compare
  15. AAC 5.56 Ammo 55 Grain FMJ 20rd Box - AAC556FMJ1-20

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

    Rating:
    98%
    (630)
    $10.99 $0.55
    Add to Wish List Add to Compare
  16. Prvi Partizan Rangemaster 5.56 Bulk Ammo 55 Gr FMJBT, 1000rds - PPRM5561M

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

    Rating:
    100%
    (1)
    Regular Price $688.99 Special Price $619.99 $0.62
    Add to Wish List Add to Compare
  17. Winchester 55 gr FMJ 5.56x45 M193 Ammunition 20 Rounds

    Winchester 55 gr FMJ 5.56x45 M193 Ammunition 20 Rounds - WM193K

    Rating:
    97%
    (89)
    $11.99 $0.60
    Add to Wish List Add to Compare
  18. PPU Rangemaster 55 gr FMJBT 5.56x45 Ammunition 20 Rounds

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

    Rating:
    90%
    (4)
    Regular Price $13.99 Special Price $11.99 $0.60
    Add to Wish List Add to Compare
  19. Winchester M855 62 gr FMJ Green Tip 5.56x45mm Ammunition 20 Rounds - USA855K

    Winchester M855 62 gr FMJ Green Tip 5.56x45mm Ammunition 20 Rounds - USA855K

    Rating:
    94%
    (49)
    $12.99 $0.65
    Add to Wish List Add to Compare
  20. Hornady Frontier 62 gr Full Metal Jacket 5.56 Ammo, 150/box - FR2615

    Hornady Frontier 62 gr Full Metal Jacket 5.56 Ammo, 150/box - FR2615

    Rating:
    93%
    (11)
    $95.99 $0.64
    Add to Wish List Add to Compare
  21. Hornady Frontier 5.56 Ammo 62 gr FMJ, 20rds - FR260

    Hornady Frontier 5.56 Ammo 62 gr FMJ, 20rds - FR260

    Rating:
    98%
    (8)
    $12.99 $0.65
    Add to Wish List Add to Compare
  22. 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%
    (11)
    $12.99 $0.65
    Add to Wish List Add to Compare
  23. 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 $39.99 Special Price $35.79 $1.79
    Add to Wish List Add to Compare
  24. 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
    Add to Wish List Add to Compare
View as Grid View List View

Items 1-24 of 182

Page
Set Descending Direction
Shop By
Shopping Options
Brand
Round Count
Casing Type
Grain Weight
Stock
Preferred Vendor
Caliber
Price
Apply

Can't find your caliber?

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.