5.56x45 Ammo For Sale
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Winchester USA 5.56x45 Ammo - 600 Rounds of 55 Grain FMJ Ammunition
$294.9978 In stock now
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Winchester USA 5.56x45 Ammo - 1000 Rounds of 55 Grain FMJ M193 Ammunition
$499.9975 In stock now
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Winchester USA 5.56x45 Ammo - 1000 Rounds of 55 Grain FMJ M193 Ammunition
$505.9978 In stock now
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Winchester 5.56x45 Ammo - 600 Rounds of 62 Grain FMJ M855 Ammunition
$349.99
$304.99
96 In stock now
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Winchester 5.56x45 Ammo - 1000 Rounds of 62 Grain FMJ M855 Ammunition
$544.99
$509.99
81 In stock now
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Winchester 5.56x45 Ammo - 800 Rounds of 62 Grain FMJ M855 Ammunition
$454.99
$409.99
65 In stock now
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Winchester USA 5.56x45 Ammo - 100 Rounds of 55 Grain FMJ M193 Ammunition
$53.9975 In stock now
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Winchester USA 5.56x45 Ammo - 150 Rounds of 55 Grain FMJ Ammunition
$85.99135 In stock now
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Winchester 5.56x45 Ammo - 200 Rounds of 62 Grain FMJ M855 Ammunition
$124.9996 In stock now
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Winchester 5.56x45 Ammo - 150 Rounds of 62 Grain FMJ M855 Ammunition
$94.99128 In stock now
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Winchester USA 5.56x45 Ammo - 20 Rounds of 55 Grain FMJ M193 Ammunition
$13.4978 In stock now
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Winchester 5.56x45 Ammo - 20 Rounds of 62 Grain FMJ M855 Ammunition
$14.8972 In stock now
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Overview of 5.56x45 Ammo
Eugene Stoner developed the 5.56 NATO in the 1950s for the AR-15 platform, officially adopted by the U.S. Military in 1963 as the standard infantry cartridge. Its lightweight, high-velocity rounds allowed soldiers to carry more ammo without sacrificing effective range or accuracy.
Today, it's one of the most popular cartridges because of its low recoil, cost, and excellent accuracy, even in the hands of a relatively new shooter.
During the Cold War, the Soviet Union developed their own lightweight intermediate cartridge in response to the 5.56 NATO. The 5.45x39mm was designed with similar goals in mind: reduced recoil, higher capacity, and improved accuracy.
What are the most popular 5.56x45 brands you sell?
You can filter our entire selection using the left sidebar to see which brands we currently have in-stock and available using the Manufacturers filter. You can also filter by attributes such as Bullet Type, Bullet Weight, Casing Type, and Primer Type to find what you need.
Popular 5.56x45 Ammo Options
Best 5.56x45 Ammo for Specific Uses
| Use Case | Details |
|---|---|
| Best 5.56 Ammo For Home Defense | Best Overall: Black Hills 5.56x45 62 Grain Dual Performance. Runner-Up: Hornady Black 5.56 62 Grain. |
| Best 5.56 Coyote Ammo | Best Overall: Hornady Superformance Varmint 53 Grain V-MAX. Runner-up: Hornady Superformance 55 Grain CX. |
For range training and high-volume plinking, Winchester USA 5.56 (commonly called "White Box") offers dependable performance at a budget-friendly price. This brass-cased training ammunition has earned a reputation for reliability and reasonable accuracy, making it a go-to choice for AR-15 owners who shoot regularly. Read our Winchester 5.56 White Box review for detailed testing results and performance data from the range.
You can also check out our in-depth look at 5.56 NATO ballistics from all of the popular ammo manufacturers if you're in search of ballistics data for your favorite factory 5.56 NATO load.
For more details on choosing the best grain for 5.56 ammunition based on your shooting needs, check out our comprehensive guide to help you select the ideal bullet weight for your 5.56 rifle.
How Does The 5.56 Compare To Other Calibers?
| 5.56 vs. | Recoil | Pros | Cons |
|---|---|---|---|
| 223 Remington | Nearly identical | 223 can be fired in 5.56 chambers (not vice versa), slightly higher pressure for better performance | 5.56 ammo is sometimes slightly more expensive |
| 277 Fury | 5.56 has less | 5.56 has less recoil, cheaper ammo, and better availability | 5.56 has less stopping power and shorter effective range |
| 300 Blackout | 5.56 has less | 5.56 has flatter trajectory, higher velocity, and less expensive ammo | 5.56 has less stopping power at close range and isn't suppressor-optimized |
| 308 Winchester | 5.56 has less | 5.56 has less recoil, cheaper ammo, lighter rifles, and higher capacity | 5.56 has less stopping power and shorter effective range |
| 30-06 Springfield | 5.56 has significantly less | 5.56 has minimal recoil, lighter rifles, cheaper ammo, and higher capacity | 5.56 has substantially less stopping power and limited hunting effectiveness on large game |
| 30 Carbine | 5.56 has slightly more | 5.56 has better ballistics, flatter trajectory, and more modern bullet designs | 5.56 has slightly more recoil and more expensive ammo |
| 350 Legend | 5.56 has less | 5.56 has less recoil, flatter trajectory, and better long-range accuracy | 5.56 has less stopping power for deer hunting |
| 458 SOCOM | 5.56 has significantly less | 5.56 has less recoil, flatter trajectory, cheaper ammo, and better availability | 5.56 has less stopping power and limited effectiveness on large game |
| 50 Beowulf | 5.56 has significantly less | 5.56 has minimal recoil, flatter trajectory, cheaper ammo, and better availability | 5.56 has substantially less stopping power and poor performance on large game |
| 5.45x39 | Nearly identical | 5.56 has better availability in the US and more bullet variety | 5.56 ammo is generally more expensive |
| 5.7x28 | 5.56 has more | 5.56 has significantly more stopping power and better effective range | 5.56 has more recoil and requires larger rifle platforms |
| 6mm ARC | 5.56 has less | 5.56 has less recoil, cheaper ammo, longer barrel life, and better availability | 5.56 has steeper trajectory, less stopping power, and worse long-range performance beyond 300 yards |
| 6.5 Grendel | 5.56 has less | 5.56 has less recoil, cheaper ammo, and better availability | 5.56 has steeper trajectory, less stopping power, and worse performance for medium game hunting |
| 6.8 SPC | 5.56 has less | 5.56 has less recoil, cheaper ammo, and better availability | 5.56 has steeper trajectory and less stopping power |
| 7.62x39 | 5.56 has less | 5.56 has flatter trajectory, better long-range accuracy, and more available ammo types | 5.56 has less stopping power at close range |
| 9mm | 5.56 has more | 5.56 has much higher velocity, better range, and superior ballistics | 5.56 has more recoil, more expensive ammo, and requires rifle platforms |
Customer Reviews
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Shad said:
Great Ammo; Pricey
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J bone said:
Same ammo as all the rest, most I've ever paid .
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Steve said:
Perfect results
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Kevin said:
Came fast and cheap. Buy bulk and plant freedom seeds.
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Brink said:
All good.
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Brian said:
There great for price
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Brian said:
Worked as described.
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Christopher M said:
Great price, solid performance, and Ammo.com has great customer service.
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Justis said:
I've used Winchester rounds in other calibers and never been disappointed by them, and I can say the same for these 5.56 rounds. Excellent training rounds, good pricing, and I've had no issues with the first 450 rounds I've used so far.
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D. said:
Was very happy with proformance of Winchester 556.no jams with 2 ARs.will be making another purchase very soon.Thanx much AMMO.you have great sales.
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Jacob said:
The rounds were dirty, with some having excess powder or some kind of processing oil/grease on them. A few boxes had 18/19 rounds in them. Worked well in my rifle after 500 rounds so far and were a good price.
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B.S said:
Shot 250 rounds , no isues.
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Jona snow said:
Great rounds , not one miss fire
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kevinjc73 said:
I have a Ruger AR556 in which Ive shot 200 rounds of Winchester 193 556 with no problems accurate at 50, 100 and 200 yards
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RONALD said:
No surprise here but the price per round shows as 63.8 cents. With shipping and sales tax, that easily went to about 85 cents. I did receive it in a timely fashion and it was well-padded in a cardboard box but would have preferred different packing from the factory. My error. A range pack means loose rounds inside a box. The ammo itself is so-so for its intended purpose. I also purchased Belom 7.62x39 (no longer available here) and cannot address ammo quality yet, but the factory packaging (20 rounds per PLASTIC case) was phenomenal.
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Joe said:
Really good on the range. haven't had a problem yet
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Head hunter said:
Shoots amazing accurate and plenty of knock down power for plucking down rodents such as ground hogs . You can reach out and touch something with accuracy and confidence .
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Jack said:
I have always put M193 as offensive/defensive ammo, which is why I purchased it in the first place. I tested 80 rounds at 25, 50, 100, and 300 yards with a Sig M400, it was dead on accurate.
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Mike O said:
Shot this on my high end Geissele rifle and very, very happy with it ... target practice
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Darrell said:
Man this ammo can in, in a matter of days nice quality