1. Ammo
  3. Rifle Ammunition
  5. 5.56 mm NATO

5.56 mm NATO Ammunition for Sale

Used by military, law enforcement, and civilians with a rifle for home defense, 5.56 NATO is one of the most popular cartridges in the world. Our 5.56 NATO collection features ammunition in a variety of weights and loads from top ammo manufacturers, ensuring you can get the best ammo for your use case. Shop 5.56 ammo for sale at Sportsman’s Outdoor Superstore.
Shop 223 Remington Ammo
5.56 NATO 55 GR FMJ FRONTIER (XM193)

Hornady 5.56 NATO 55 gr FMJ (M193) Frontier 13889 Rounds Loose in Barrel

  • $7,632.00 ($0.55 / round )
  • Brand: Hornady
  • Item Number: FR200B
  • Type: Target
  • Quantity: 13889 Rounds
5.56MM 55 GR FMJ BT 1100 RD AMMO CAN

Federal 5.56mm 55 gr FMJ Boat Tail 1100 Rounds in Ammo Can

  • $1,379.99 ($1.25 / round )
  • Brand: Federal
  • Item Number: ZTNFC193
  • Type: Target
  • Quantity: 1100 Rounds
5.56MM 55 GR MCBT BALL

Federal XM193 5.56mm 55 gr MCBT 1000 Rounds

  • $1,249.99 ($1.25 / round )
5.56MM NATO 62 GR FMJ 1000 RD AMMO CAN

Federal XM855 5.56mm 62 gr FMJ 1000 Round Ammo Can

  • $1,249.99 ($1.25 / round )
  • Brand: Federal
  • Item Number: XM855AMMOCAN
  • Type: Target
  • Quantity: 1000 Rounds
5.56MM NATO 62 GR FMJ BT 1000 RD

Federal XM855 5.56mm 62 gr FMJ Ball 1000 Round Box

  • $1,249.99 ($1.25 / round )
  • Brand: Federal
  • Item Number: XM855 1000CT
  • Type: Target
  • Quantity: 1000 Rounds
5.56 NATO 62 GR M855 PENETRATOR GREEN TIP

IMI 5.56 mm 62 gr M855 Penetrator Green Tip Ammo 1000 Rounds

  • $1,249.99 ($1.25 / round )
  • Brand: IMI
  • Item Number: 10-172-9868US
  • Type: Target
  • Quantity: 1000 Rounds
5.56 NATO 55 GR FMJ (XM193) (1000 LOOSE) FRONTIER

Hornady Frontier 5.56 NATO 55 gr FMJ 1000/Case

  • $1,249.99 ($1.25 / round )
  • Brand: Hornady
  • Item Number: FR206
  • Type: Target
  • Quantity: 1000 Rounds
5.56MM 55 GR FMJ M193 1000/BOX

Winchester 5.56mm 55 gr FMJ M193 1000/Box

  • $516.59 ($0.52 / round )
In Stock
  • Brand: Winchester
  • Item Number: WM193
  • Type: Target
  • Quantity: 1000 Rounds
5.56 62 GR BALL PENETRATOR 1000RD

Federal 5.56mm NATO 62 gr FMJ Green Tip XM855 1000/Box

  • $1,249.99 ($1.25 / round )
  • Brand: Federal
  • Item Number: XM855CSF
  • Type: Target
  • Quantity: 1000 Rounds
5.56X45MM 55 GR FMJBT AMMO CAN 1000/CAN

Ppu 5.56x45mm 55 gr FMJBT 1000 Rounds in Ammo Can

  • $1,249.99 ($1.25 / round )
  • Brand: Ppu
  • Item Number: PPN5561MC
  • Type: Target
  • Quantity: 1000 Rounds
5.56 NATO 62 GR FMJ AMMO CAN 900/CAN

ADI 5.56mm NATO 62 gr FMJ 900 Rounds in Ammo Can

  • $1,124.99 ($1.25 / round )
  • Brand: ADI
  • Item Number: ADI556 M2A1
  • Type: Self Defense
  • Quantity: 900 Rounds
5.56MM NATO 62 GR 800 RD AMMO CAN

Federal 5.56mm 62 gr M855 Lake City Green-Tip 800 Rounds in Ammo Can

  • $999.99 ($1.25 / round )
  • Brand: Federal
  • Item Number: XM855LPCC800
  • Type: Target
  • Quantity: 800 Rounds
5.56 MM M855 GREEN TIP LAKE CITY FMJ 62 GR 1000RD

Winchester 5.56 mm 62 gr FMJ M855 Green Tip Lake City 1000/Case

  • $488.04 ($0.49 / round )
In Stock
  • Brand: Winchester
  • Item Number: WM8551000
  • Type: Target
  • Quantity: 1000 Rounds
5.56 55 GR FMJ BT AMERICAN EAGLE LOOSE 1000/BOX

Federal 5.56mm 55 gr FMJ BT XM193 American Eagle 1000 Round Case (Loose)

  • $799.99 ($0.80 / round )
  • Brand: Federal
  • Item Number: XM193BKX
  • Type: Target
  • Quantity: 1000 Rounds
5.56MM NATO 62 GR FMJ BT 600 RD LOOSE PACK

Federal XM855 5.56mm 62 gr FMJ Ball 600/Case

  • $749.99 ($1.25 / round )
  • Brand: Federal
  • Item Number: XM855BK150
  • Type: Target
  • Quantity: 600 Rounds
ADI 5.56 NATO 62 GRAIN FMJ

ADI 5.56 NATO 62 gr FMJ-BT 900 Rounds in Metal Ammo Can

  • $699.99 ($0.78 / round )
  • Brand: ADI
  • Item Number: ADI-9332153002503
  • Type: Target
  • Quantity: 900 Rounds
5.56MM NATO 62 GR FMJ M855 GREEN TIP LAKE CITY 1000 RD CASE

Winchester 5.56mm NATO 62 gr FMJ M855 Green Tip Lake City 1000 Round Case

  • $690.99 ($0.69 / round )
  • Brand: Winchester
  • Item Number: WM855K
  • Type: Target
  • Quantity: 1000 Rounds
5.56MM NATO 62 GR BALL PENETRATOR

Federal XM855 5.56mm 62 gr FMJ-BT 500 Rounds

  • $624.99 ($1.25 / round )
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The Cartridge Designed For Service

5.56 NATO was developed to replace the 7.62x51mm NATO cartridge, which had been in service since 1954. Servicemen found that the recoil power of 7.62 NATO made it impossible to control for light service rifles firing at full auto. It wasn't until 1963 that 5.56 NATO, a slightly modified form of the .223 Remington cartridge, was adopted as the standard issue ammo for NATO militaries. 5.56 NATO ammo remains in use to this day, typically paired with AR-15 rifles.

Looking for cartridges in a different caliber than our 5.56 ammo for sale? We have a vast variety of ammo for sale. You'll find everything from vintage trade-in ammo to shotgun shells. Restock on ammo today with Sportsman's Outdoor Superstore.

Shop Guns, Ammo, and Accessories

Since 2007, Sportsman's Outdoor Superstore has been the go-to source for ammo, accessories, and guns for sale. We're proud to be a gun store where a shooter can find everything they need, regardless of their background. Whether you're restocking on 5.56 NATO ammo or looking for handguns for sale, you'll find it in our collection at competitive prices.

All orders ship nationwide, with free shipping offered to customers living in the Lower 48. To ensure you never have to worry about surprise backorders, we exclusively offer weapons we have in stock and ready to ship. If you ever do run into problems, we have an in-house customer service team that's happy to help. Order today!

Frequently Asked Questions

Can I shoot 5.56 NATO ammo in a gun chambered for .223 Remington?

While it is possible, we don't recommend firing 5.56 NATO rounds from a gun built for .223 Remington. Despite being the same dimensions, 5.56 NATO generates more pressure than .223 Remington. If the gun isn't chambered for that pressure, it can cause serious damage. However, you can fire .223 Remington rounds from a gun chambered for 5.56 NATO.

Can civilians buy your 5.56 ammo for sale?

Yes, civilians can buy our 5.56 NATO ammunition. While the round was originally designed for military use, there are no legal restrictions for 5.56 NATO that prevent civilians from purchasing it.

What is 5.56 NATO ammo good for?

5.56 NATO was designed specifically for military use, so it should be no surprise that it's a fantastic cartridge for personal and home defense. It's also used by hunters for hunting small to medium game.

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