5.56x45 Ammo

Used in the M4 series of rifles and other military style rifles, the 5.56x45 is a hugely popular cartridge.  Besides military uses it is commonly used in competition firearms, home defence applications it is replacing shotguns in many police cruisers.
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  1. PMC 5.56x45 Ammo - 20 Rounds of 55 Grain FMJ Ammunition

    Image For 20 Rounds Of 55 Grain FMJ Boxer Brass 5.56x45 PMC Ammunition

    Qty:

    $7.90 Price As low as $7.50 in bulk
    74
    In stock now
    • 20 Rounds
    • Made by PMC
    • Foreign Discount Range
    • 37.5¢ to 39.5¢ Cost Per Round
    • PMC SKU 5.56X
    • UPC 741569010115
  2. Prvi Partizan 5.56x45 Ammo - 20 Rounds of 55 Grain FMJ Ammunition

    Image For 20 Rounds Of 55 Grain FMJ-BT Boxer Brass 5.56x45 Prvi Partizan Ammunition

    Qty:

    $8.00 Price As low as $7.50 in bulk
    87
    In stock now
    • 20 Rounds
    • Made by Prvi Partizan
    • Foreign Discount Range
    • 37.5¢ to 40¢ Cost Per Round
    • Prvi Partizan SKU PP5.2
  3. Federal 5.56x45 Ammo - 20 Rounds of 62 Grain FMJ Ammunition

    Image For 20 Rounds Of 62 Grain FMJ-BT Boxer Brass 5.56x45 Federal Ammunition

    Qty:

    $8.75 Price As low as $8.00 in bulk
    76
    In stock now
    • 20 Rounds
    • Made by Federal
    • American-made Range
    • 40¢ to 43.8¢ Cost Per Round
    • Federal SKU XM855F
  4. Federal 5.56x45 Ammo - 20 Rounds of 55 Grain FMJ-BT Ammunition

    Image For 20 Rounds Of 55 Grain FMJ-BT Boxer Brass 5.56x45 Federal Ammunition

    Qty:

    $8.80 Price
    92
    In stock now
    • 20 Rounds
    • Made by Federal
    • American-made Range
    • 44¢ Cost Per Round
    • Federal SKU XM193
  5. PMC 5.56x45 Ammo - 20 Rounds of 62 Grain FMJ Ammunition

    Image For 20 Rounds Of 62 Grain FMJ Boxer Brass 5.56x45 PMC Ammunition

    Qty:

    $9.00 Price
    82
    In stock now
    • 20 Rounds
    • Made by PMC
    • Foreign Discount Range
    • 45¢ Cost Per Round
    • PMC SKU 5.56K
    • UPC 741569010122
  6. Independence 223 Rem Ammo - 20 Rounds of 55 Grain Full Metal Jacket Ammunition

    Image For 20 Rounds Of 55 Grain FMJ Boxer Brass 5.56x45 Independence Ammunition

    Qty:

    $9.00 Price
    88
    In stock now
    • 20 Rounds
    • Made by Independence
    • American-made Discount Range
    • 45¢ Cost Per Round
    • Independence SKU XM193I
    • UPC 029465063917
  7. Federal 5.56x45 Ammo - 30 Rounds of 55 Grain FMJ-BT Ammunition

    Image For 30 Rounds Of 55 Grain FMJ-BT Boxer Brass 5.56x45 Federal Ammunition

    Qty:

    $13.00 Price As low as $12.50 in bulk
    83
    In stock now
    • 30 Rounds
    • Made by Federal
    • American-made Range
    • 41.7¢ to 43.3¢ Cost Per Round
    • Federal SKU XM193J
    • UPC 029465062637
  8. Federal 5.56x45 Ammo - 20 Rounds of 55 Grain FMJ-BT Ammunition

    Image For 20 Rounds Of 55 Grain FMJ-BT Boxer Brass 5.56x45 Federal Ammunition

    Qty:

    $14.00 Price
    73
    In stock now
    • 20 Rounds
    • Made by Federal
    • American-made Discount Range
    • 70¢ Cost Per Round
    • Federal SKU XM193H
    • UPC 029465060749
  9. Federal 5.56x45 Ammo - 90 Rounds of 55 Grain FMJ-BT Ammunition

    Image For 90 Rounds Of 55 Grain FMJ-BT Boxer Brass 5.56x45 Federal Ammunition

    Qty:

    $36.00 Price
    110
    In stock now
    • 90 Rounds
    • Made by Federal
    • American-made Range
    • 40¢ Cost Per Round
    • Federal SKU XM193AF90
    • UPC 029465065133
  10. Federal 5.56x45 Ammo - 120 Rounds of 55 Grain FMJ-BT Ammunition

    Image For 120 Rounds Of 55 Grain FMJ-BT Boxer Brass 5.56x45 Federal Ammunition

    Qty:

    $55.00 Price
    510
    In stock now
    • 120 Rounds
    • Made by Federal
    • American-made Discount Range
    • 45.8¢ Cost Per Round
    • Federal SKU XM193-LPC120
    • UPC 029465065119
  11. Federal 5.56x45 Ammo - 120 Rounds of 62 Grain FMJ Ammunition

    Image For 120 Rounds Of 62 Grain FMJ Boxer Brass 5.56x45 Federal Ammunition

    Qty:

    $60.00 Price As low as $57.00 in bulk
    165
    In stock now
    • 120 Rounds
    • Made by Federal
    • American-made Discount Range
    • 47.5¢ to 50¢ Cost Per Round
    • Federal SKU XM855-LPC120
  12. Federal 5.56x45 Ammo - 150 Rounds of 62 Grain FMJ Ammunition

    Image For 150 Rounds Of 62 Grain FMJ Boxer Brass 5.56x45 Federal Ammunition

    Qty:

    $69.00 Price
    854
    In stock now
    • 150 Rounds
    • Made by Federal
    • American-made Range
    • 46¢ Cost Per Round
    • Federal SKU XM855BK150
    • UPC 029465065164
  13. Lake City 5.56x45 Ammo - 250 Rounds of 62 Grain FMJ Ammunition

    Image For 250 Rounds Of 62 Grain FMJ Boxer Brass 5.56x45 Lake City Ammunition

    Qty:

    $137.00 Price
    22
    In stock now
    • 250 Rounds
    • Made by Lake City
    • American-made Range
    • 54.8¢ Cost Per Round
    • UPC 855-12778
  14. Independence 5.56x45 Ammo - 500 Rounds of 55 Grain FMJ-BT Ammunition

    Image For 500 Rounds Of 55 Grain FMJ Boxer Brass 5.56x45 Independence Ammunition

    Qty:

    $180.00 Price
    24
    In stock now
    • 500 Rounds
    • Made by Independence
    • American-made Discount Range
    • 36¢ Cost Per Round
    • Independence SKU XM193I
  15. Federal M855 5.56x45 Ammo - 420 Round Stripper Clips 62 Grain FMJ Ammunition

    Image For 420 Rounds Of 62 Grain FMJ Boxer Brass 5.56x45 Federal Ammunition

    Qty:

    $185.00 Price
    26
    In stock now
    • 420 Rounds
    • Made by Federal
    • American-made Range
    • 44¢ to 44.1¢ Cost Per Round
    • Federal SKU XM855LC1 AC1
    • UPC 50029465063189
  16. Federal 5.56x45 Ammo - 450 Rounds of 55 Grain FMJ-BT Ammunition

    Image For 450 Rounds Of 55 Grain FMJ-BT Boxer Brass 5.56x45 Federal Ammunition

    Qty:

    $185.00 Price
    25
    In stock now
    • 450 Rounds
    • Made by Federal
    • American-made Discount Range
    • 41.1¢ Cost Per Round
    • Federal SKU XM193AF90
    • UPC 50029465065138
  17. Federal 5.56x45 Ammo - 600 Rounds of 62 Grain FMJ Ammunition

    Image For 600 Rounds Of 62 Grain FMJ Boxer Brass 5.56x45 Federal Ammunition

    Qty:

    $229.00 Price $265.00

    21
    In stock now
    • 600 Rounds
    • Made by Federal
    • American-made Range
    • 38.2¢ Cost Per Round
    • Federal SKU XM855BK150
    • UPC 50029465065169
  18. Federal 5.56x45 Ammo - 600 Rounds of 55 Grain FMJ-BT Ammunition

    Image For 600 Rounds Of 55 Grain FMJ-BT Boxer Brass 5.56x45 Federal Ammunition

    Qty:

    $250.00 Price
    27
    In stock now
    • 600 Rounds
    • Made by Federal
    • American-made Discount Range
    • 41.7¢ Cost Per Round
    • Federal SKU XM193-LPC120
    • UPC 50029465065114
  19. PMC 5.56x45 Ammo - 1000 Rounds of 55 Grain FMJ Ammunition

    Image For 1000 Rounds Of 55 Grain FMJ Boxer Brass 5.56x45 PMC Ammunition

    Qty:

    $359.00 Price $385.00

    25
    In stock now
    • 1000 Rounds
    • Made by PMC
    • Foreign Discount Range
    • 35.9¢ Cost Per Round
    • PMC SKU 5.56X / XP193
    • UPC 20741569010119
  20. PMC 5.56x45 Ammo - 1000 Rounds of 62 Grain FMJ Ammunition

    Image For 1000 Rounds Of 62 Grain FMJ Boxer Brass 5.56x45 PMC Ammunition

    Qty:

    $380.00 Price
    21
    In stock now
    • 1000 Rounds
    • Made by PMC
    • Foreign Discount Range
    • 38¢ Cost Per Round
    • PMC SKU 5.56K
    • UPC 20741569010126
  21. Australian Defense Industries 5.56x45 Ammo - 900 Rounds of 62 Grain FMJ Ammunition

    Image For 900 Rounds Of 62 Grain FMJ Boxer Brass 5.56x45 Australian Defense Industries Ammunition

    Qty:

    $454.00 Price
    20
    In stock now
    • 900 Rounds
    • Made by Australian Defense Industries
    • Foreign Range
    • 50.4¢ Cost Per Round
    • Australian Defense Industries SKU A5569
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History of 5.56x45mm Ammunition

Developed in the late 1950s and early 1960s after extensive research into small caliber, high-velocity (SCHV) projectiles, 5.56x45 has become one of the world's most popular centerfire cartridges. It is used by police and military agencies around the globe, as well as a growing number of private citizens in the United States.

The first 5.56x45 loads featured 55 grain full metal jacket bullets at over 3200 feet per second out of the barrel of the then-new AR-15 rifle, which later became the M16. Since that time, a number of other projectiles have been used, including the steel penetrator tip M855 and barrier-blind Mk318, both of which are 62gr bullets. Also, Sierra MatchKing 77gr BTHP, or OTM, bullets are used in the Mk262 precision marksman ammunition.

Due to its worldwide popularity, the 5.56x45 cartridge has been used by a number of firearm manufacturers. Colt, Armalite, Bushmaster, Rock River, DPMS, Bravo Company, LMT, Spike's Tactical, Daniel Defense, Heckler & Koch, FN, Beretta, Sig, and LWRC, among others, have produced semi-automatic and automatic rifles chambered in 5.56x45.

Discuss 5.56x45 ammunition by adding your comment to the 1 comment below or by asking a new question

Ramos Ray ( Thu, 04 Oct 2012 04:07:22 +0000 ) : this ammo is a superb in accuracy.
5.56x45 Ammo Ammo Customer Reviews
  • Click To Purchase This 5.56x45 Federal Ammunition
  • A65impalla said: "I was glad to find that Ammo.net had plenty of stock of this ammo. I searched the net of a lot of places, their prices are very competitive."
  • twolazy said: "I have not shot any of this batch or the batch prior, I haven’t even opened the boxes. I’m in high hopes I never have to open these boxes. I’ve used Federal 5.56 before and it is good stuff. Price is stiff, not as stiff as some I’ve seen. But then everything gun related is more expensive, isn’t it. Get it while the getting is good."
  • Doc said: "I guess a shortage in the ammo supply has driven the price up, as I found your ammo to be a bit more expensive than I had anticipated.. Regardless, the delivery time was exceptional & the ammo itself came in good condition and preformed well."
  • Tommy said: "I have already recommended it, that being said, it is a bit pricey. But considering that there is such a shortage, I was happy to have it. I get a small disability check once a month, so, I'll have to save more money."
  • CJ said: "The order was handled quickly and efficiently. I would recommend Ammo.net to anyone who has stood in line trying to find ammo."
  • Adam said: "Good, Clean, ammo....pricey but what can ya do....fast delivery too I cant even find a die set to reload let alone the bullets or primers so this ammo will do untill times are better....if ever "
  • deaves1 said: "5 stars"
  • Don said: "Nice to know where to locate ammo after this BS of low production and high demand."
  • Joe-we-had-a-baby-it's-a-boy said: "Ammo was well packed, but the tins came in a bit banged up. Ammo was clean in good shape but stripper clips showed moisture damage with minor rust making it hard to load with the speed loader. The cost was deffently high and go figure right after I ordered I found 1000rnds of loose pack 62gr lake city for the same price as one tin of 420rnds, but finding 556 ammo these days is deffently a gamble of finding it and its price! Hopefully all this Bull will be over soon!"
  • mrob6868 said: "Good and clean, but a little pricey."
  • nikpac said: "good clean ammo and a great overall value"
  • trooper said: "This ammo package is over twice as expensive as it should be. If you don't reload your own .223 just go with Wolf... "
  • jj said: "a good qalityt shell cida "
  • Gilbert said: "good"
  • Gilbert said: "good clean ammo sum what pricey but good over all"
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  • Click To Purchase This 5.56x45 PMC Ammunition
  • Runner said: "PMC is a very reliable ammunition , I would not hesitate to use if for self defense. It shot well and now that I have shot it and used it all, I`ll need to order more. BTW , I use PMC in my handgun for home protection and it is as good as it gets and the 5.56x45 is as great . "
  • MM said: "I shot about 200 rounds through my brand new SIG716. The very first 3-4 rounds wouldn't feed perfectly, but I attribute this to the brand spanking new equipment. After that, rifle and ammo performed flawlessly. Not a single issue with feeding, cycling, firing, etc. At 150 yards, I had all shots within about 2-3 inches using a cheap scope and no rest. Great product and especially GREAT SERVICE! Thank you guys!!!"
  • D said: "Great customer service, placed the order last friday fully expecting not to get the order with all that is going on, you won't find a better company to deal with, as for the Ammo, top notch perfect for my use."
  • CowwFace said: "I got this for taking to the range, went through about 100 rounds and zero duds. works perfectly in 2 AR's. We were using Red-Dot scopes, and hit what we were aiming at about 100 yrds away. I would highly recommend this ammo."
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  • Click To Purchase This 5.56x45 Federal Ammunition
  • gokart04 said: "Finally got to shoot some of this the other day. Worked well and shot consistant/accurate. No feeding or fire failures out of about 100 rounds in my BCM AR-15. I feel the price is a bit too high at this time. "
  • J.W. said: "These were the first rounds shot through my ar. I have no complaints, it cycles fine even through rapid firing. I would definitely buy these again."
  • H.D. said: "Works great, cycles fine, glad I found your sight."
  • Pat said: "This is excellent ammo. Velocity is up there, at least in my 20" barrel DTI ar 15. Kinda lucky to buy this cheap ammo and get it to shoot the way this stuff did. I love being able to buy metal cases as well as brass cases. The metal are non-reloadable and it's nice to just shoot these and not worry about looking after shooting. I worry about the future of buying ammo over the 'net in the future. Here in Illinois our great governor Quinn moves on every front to close the avenues to get ammo. Good Shooting to All "
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  • Click To Purchase This 5.56x45 Prvi Partizan Ammunition
  • GearheadTony said: "I have tried several more expensive brands of 5.56 and .223, but none of them can match the performance per dollar of PRVI. This is now the only ammo I use in my AR. As for Lewmed's review above, my 16" AR with my not-so-steady trigger finger are able to make 2MOA groups at 100 yards. 4 to 5 inches?!?! Not in my rifle."
  • Lewmed said: " This is nice clean ammo that shoots and works in all 3 of my AR'S but it is not as accurate as mil. spec. ammo like lake city M193 My normal 21/2" 100 yard groups open up to 4 to 5" I'll use it for 50 yard range ammo."
  • Dorothy said: "Thought it wouldn't hurt to give it a shot. I was right."
  • Click To Purchase This 5.56x45 Federal Ammunition
  • murdock said: "62 grain shoots just fine. no jams. but that old vietnam ak will fire, even when dropped in mud, and water. thanks Im just glad you had the ammo, and the price was right."
  • Mikey A said: "As usual very prompt customer service and worry free shipping, love these guys & gals @ ammo.net Well I am no expert about ammo, but I will say that this ammo was performing better than some more expensive products. fresh and snappy, good penetration and groupings 2"-3" @ 200-300 yds, mini-14 1-9 twist , similar to SS109 m855 but heavier Gr. "
  • Click To Purchase This 5.56x45 Lake City Ammunition
  • Bill said: "I have tried different ammo with Sig 556. Its eats everything but I find Lake City 5.56 62gr --- No failures, Accurate @ 100 to 300 yards ( my club limits ) I have the feeling of complete depenability."
  • Russ said: "This is great ammo for the hybrid AR's.The brass is good for reloading and the 62 grain bullets stabilize well. Russ"
  • Click To Purchase This 5.56x45 PMC Ammunition
  • Nate said: "The ammo itself LOOKS beautiful compared to Lake City penetrators but I have not shot it yet so I can't comment on that. I paid more per round, but that is just the market, not Ammo.net."
  • Bigthiss said: "Great ammunition for the price. I used to buy the federal loose bulk ammo in 500 and 1000 but there were always at least 10-20 that were either faulty loads or misfired. This ammo is hands down the best for the price that I have purchased and shot. Highly recommend!! "