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.223 / 5.56

See our in-stock line-up of 223 Remington and 5.56x45 ammo below. 223 and 5.56 are not interchangeable calibers. If your firearm is chambered for 5.56, you're clear to fire either in the rifle. If your firearm is chambered for 223, you should only fire 223 Remington ammo in it.
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1 - 20 of 116

  1. 150rds – 223 Rem Hornady Frontier 55gr. FMJ Ammo 150rds – 223 Rem Hornady Frontier 55gr. FMJ Ammo
    $74.95
    $0.5/ppr

    30 In Stock

    Bullet type
    Full Metal Jacket (FMJ)     Muzzle Energy
    1282     Casing Type
    Brass     Muzzle Velocity
    3240     Primer Type
    Boxer     Bullet Weight
    55 Grain
  2. 150rds – 223 Rem Federal Black Pack 55gr. FMJ Ammo 150rds – 223 Rem Federal Black Pack 55gr. FMJ Ammo
    $74.95
    $0.5/ppr

    9 In Stock

    Bullet type
    Full Metal Jacket (FMJ)     Muzzle Energy
    1282     Casing Type
    Brass     Muzzle Velocity
    3240     Primer Type
    Boxer     Bullet Weight
    55 Grain
  3. 540rds – 5.56x45 Old Army 55gr. FMJ M193 Ammo 540rds – 5.56x45 Old Army 55gr. FMJ M193 Ammo
    $269.95
    $0.5/ppr

    56 In Stock

    Bullet type
    Full Metal Jacket (FMJ)     Muzzle Energy
    1282     Casing Type
    Brass     Muzzle Velocity
    3240     Primer Type
    Boxer     Bullet Weight
    55 Grain
  4. 1000rds – 5.56x45 Igman 55gr. FMJ M193 Ammo 1000rds – 5.56x45 Igman 55gr. FMJ M193 Ammo
    $499.95
    $0.5/ppr

    ☆☆☆☆☆ 1 Review

    55 In Stock

    ☆☆☆☆☆ 1 Review

    Bullet type
    Full Metal Jacket (FMJ)     Muzzle Energy
    1235     Casing Type
    Brass     Muzzle Velocity
    3180     Primer Type
    Boxer     Bullet Weight
    55 Grain
  5. 1000rds – 223 Rem Armscor USA 55gr. PSP Ammo 1000rds – 223 Rem Armscor USA 55gr. PSP Ammo
    $509.95
    $0.51/ppr

    5 In Stock

    Bullet type
    Pointed Soft-Point (PSP)     Muzzle Energy
    1323     Casing Type
    Brass     Muzzle Velocity
    3100     Primer Type
    Boxer     Bullet Weight
    55 Grain
  6. 600rds – 5.56x45 Winchester USA 55gr. FMJ Ammo 600rds – 5.56x45 Winchester USA 55gr. FMJ Ammo
    $309.95
    $0.52/ppr

    4 In Stock

    Bullet type
    Full Metal Jacket (FMJ)     Muzzle Energy
    1235     Casing Type
    Brass     Muzzle Velocity
    3180     Primer Type
    Boxer     Bullet Weight
    55 Grain
  7. 1250rds – 5.56x45 Winchester USA VALOR 62gr. FMJ M855 Ammo 1250rds – 5.56x45 Winchester USA VALOR 62gr. FMJ M855 Ammo
    $649.95
    $0.52/ppr

    ☆☆☆☆☆ 1 Review

    2 In Stock

    ☆☆☆☆☆ 1 Review

    Bullet type
    Penetrator     Muzzle Energy
    1289     Casing Type
    Brass     Muzzle Velocity
    3060     Primer Type
    Boxer     Bullet Weight
    62 Grain
  8. 200rds - .223 PMC Bronze 55gr. FMJ Ammo in Battle Packs 200rds - .223 PMC Bronze 55gr. FMJ Ammo in Battle Packs
    $104.95
    $0.52/ppr

    34 In Stock

    Bullet type
    Full Metal Jacket Boat Tail (FMJ-BT)     Muzzle Energy
    1250     Casing Type
    Brass     Muzzle Velocity
    3200     Primer Type
    Boxer     Bullet Weight
    55 Grain
  9. 125rds – 5.56x45 Winchester USA VALOR 62gr. FMJ M855 Ammo 125rds – 5.56x45 Winchester USA VALOR 62gr. FMJ M855 Ammo
    $65.95
    $0.53/ppr

    8 In Stock

    Bullet type
    Penetrator     Muzzle Energy
    1289     Casing Type
    Brass     Muzzle Velocity
    3060     Primer Type
    Boxer     Bullet Weight
    62 Grain
  10. 800rds – 5.56x45 Winchester USA 55gr. FMJ Ammo 800rds – 5.56x45 Winchester USA 55gr. FMJ Ammo
    $423.95
    $0.53/ppr

    3 In Stock

    Bullet type
    Full Metal Jacket (FMJ)     Muzzle Energy
    1235     Casing Type
    Brass     Muzzle Velocity
    3180     Primer Type
    Boxer     Bullet Weight
    55 Grain
  11. 800rds – 223 Rem Winchester USA 55gr. FMJ Ammo 800rds – 223 Rem Winchester USA 55gr. FMJ Ammo
    $424.95
    $0.53/ppr

    2 In Stock

    Bullet type
    Full Metal Jacket (FMJ)     Muzzle Energy
    1282     Casing Type
    Brass     Muzzle Velocity
    3240     Primer Type
    Boxer     Bullet Weight
    55 Grain
  12. 1000rds – 5.56x45 Winchester USA 55gr. FMJ M193 Ammo 1000rds – 5.56x45 Winchester USA 55gr. FMJ M193 Ammo
    $534.95
    $0.53/ppr

    2 In Stock

    Bullet type
    Full Metal Jacket (FMJ)     Muzzle Energy
    1235     Casing Type
    Brass     Muzzle Velocity
    3180     Primer Type
    Boxer     Bullet Weight
    55 Grain
  13. 1000rds – 5.56x45 Winchester USA 55gr. FMJ M193 Ammo 1000rds – 5.56x45 Winchester USA 55gr. FMJ M193 Ammo
    $539.95
    $0.54/ppr

    2 In Stock

    Bullet type
    Full Metal Jacket (FMJ)     Muzzle Energy
    1235     Casing Type
    Brass     Muzzle Velocity
    3180     Primer Type
    Boxer     Bullet Weight
    55 Grain
  14. 1000rds – 5.56x45 Winchester USA 55gr. FMJ Ammo 1000rds – 5.56x45 Winchester USA 55gr. FMJ Ammo
    $554.95
    $0.55/ppr

    5 In Stock

    Bullet type
    Full Metal Jacket (FMJ)     Muzzle Energy
    1235     Casing Type
    Brass     Muzzle Velocity
    3180     Primer Type
    Boxer     Bullet Weight
    55 Grain
  15. 100rds – 5.56x45 Winchester USA 55gr. FMJ M193 Ammo 100rds – 5.56x45 Winchester USA 55gr. FMJ M193 Ammo
    $55.95
    $0.56/ppr

    7 In Stock

    Bullet type
    Full Metal Jacket (FMJ)     Muzzle Energy
    1235     Casing Type
    Brass     Muzzle Velocity
    3180     Primer Type
    Boxer     Bullet Weight
    55 Grain
  16. 150rds – 5.56x45 Winchester USA 55gr. FMJ Ammo 150rds – 5.56x45 Winchester USA 55gr. FMJ Ammo
    $84.95
    $0.57/ppr

    ☆☆☆☆☆ 1 Review

    8 In Stock

    ☆☆☆☆☆ 1 Review

    Bullet type
    Full Metal Jacket (FMJ)     Muzzle Energy
    1235     Casing Type
    Brass     Muzzle Velocity
    3180     Primer Type
    Boxer     Bullet Weight
    55 Grain
  17. 600rds – 5.56x45 Winchester 62gr. FMJ M855 Ammo 600rds – 5.56x45 Winchester 62gr. FMJ M855 Ammo
    $339.95
    $0.57/ppr

    4 In Stock

    Bullet type
    Penetrator     Muzzle Energy
    1289     Casing Type
    Brass     Muzzle Velocity
    3060     Primer Type
    Boxer     Bullet Weight
    62 Grain
  18. 20rds – 223 Rem Patriot Sports 55gr. FMJ Ammo 20rds – 223 Rem Patriot Sports 55gr. FMJ Ammo
    $11.45
    $0.57/ppr

    104 In Stock

    Bullet type
    Full Metal Jacket (FMJ)     Muzzle Energy
    1315     Casing Type
    Brass     Muzzle Velocity
    3281     Primer Type
    Boxer     Bullet Weight
    55 Grain
  19. 500rds - 5.56x45 Hornady Frontier 55gr. HP Match Ammo 500rds - 5.56x45 Hornady Frontier 55gr. HP Match Ammo
    $294.95
    $0.59/ppr

    ☆☆☆☆☆ 1 Review

    53 In Stock

    ☆☆☆☆☆ 1 Review

    Bullet type
    Hollow Point     Muzzle Energy
    1282     Casing Type
    Brass     Muzzle Velocity
    3240     Primer Type
    Boxer     Bullet Weight
    55 Grain
  20. 150rds – 5.56x45 Winchester 62gr. FMJ M855 Ammo 150rds – 5.56x45 Winchester 62gr. FMJ M855 Ammo
    $89.95
    $0.6/ppr

    ☆☆☆☆☆ 1 Review

    2 In Stock

    ☆☆☆☆☆ 1 Review

    Bullet type
    Penetrator     Muzzle Energy
    1289     Casing Type
    Brass     Muzzle Velocity
    3060     Primer Type
    Boxer     Bullet Weight
    62 Grain

1 - 20 of 116

More fromThe Lodge

More resources for AR-15 and other 223 Remington or 5.56x45 shooters! Check out AmmoToGo.com's blog about ammo, guns and shooting.

223 Ballistics

An in-depth look at 223 ballistics for the top selling rounds among American shooters and hunters.
Read at the Lodge

223 Remington Ammo Resources .223 Rem Caliber Comparisons. How does .223 and 5.56x45 stack up against other rifle calibers? Read our in-depth guides with ballistic comparisons and more to be sure you're using the best caliber for the job.

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More About .223 & 5.56 Ammo

.223 and 5.56x45 ammunition are nearly identical but there are a few subtle differences that may help you decide which caliber is best for you. Generally, if you own an AR-15 or other rifle chambered for 5.56x45, you can safely shoot .223 or 5.56 ammunition in your firearm without any trouble. However, if you own a rifle that's designated for .223, you may not want to shoot 5.56x45 ammo. 5.56 cartridges are loaded to slightly higher pressures than most commercial .223 ammunition.

M855 green tipped 5.56 ammo

M855 vs. M193

Both the M855 and M193 cartridges are popular 5.56x45 loads. The M855 is 62 grain and has a steel core, which can help it penetrate armor slightly better than M193. For more details on the differences, check out this article on our blog about M855 vs. M193.

How Much is 223 Ammo?

Generally speaking, .223 and 5.56x45 ammunition is pretty cheap to shoot compared to other rifle options. You'll save money by buying your ammo in bulk and we carry a huge variety of 1,000 round cases for sale here that'll have you shooting all day. If you need a precision round, look to match-grade ammunition. This ammo is loaded with higher quality components and should give you more accuracy than cheaper, bulk range options.

Steel Cased Ammo vs. Brass Cased

Many shooters prefer to shoot steel-cased .223 ammo because it's cheaper than most brass-cased options for sale. Generally, steel cased ammo works well in AR-15 rifles and you shouldn't have any trouble. Some shooters believe steel cased rounds do lead to more wear and tear on your firearms but depending upon your level of knowledge, you may be able to swap out barrels and other rifle components on your own and the money saved on ammo will make it well worth your time.

Steel-cased ammunition manufactured today is not corrosive and it will not harm your .223 or 5.56x45 chambered firearm outside of regular wear-and-tear that you'd get from thousands of rounds of use.

.223/5.56x45 Bullet Types

Range Use

If you're shooting at the range, we recommend you go with a full metal jacket (FMJ) or full metal jacket boat-tail loaded ammunition. These rounds are typically cheap so you can get in as much training as possible within your budget.

Hunting with .223

Yes, you can hunt with .223 ammo in an AR-15 or other rifle. It's very common to hunt hogs and even whitetail deer with .223 ammunition. If you're going to do so, we suggest picking up ammo loaded with soft point bullets or a more sophisticated, polymer-tipped .223 round. These ammunition options are typically a little more expensive but the more sophisticated projectiles will help bring down game humanely.

Precision Shooting

Look for rounds branded as "match" by the manufacturer. We carry some of the best commercial loads available, featuring Federal Match, Winchester Match, Hornady and Barnes.

Recent .223 / 5.56 Reviews