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.223 .556

The .223 Remington (.223 Rem) is a rifle cartridge. The name is commonly pronounced either two-twenty-three or two-two-three Remington. It is commercially loaded with 0.224 inch (5.56 mm) diameter jacketed bullets, with weights ranging from 40 to 85 grains (2.6 to 5.8 g), though the most common loading by far is 55 grains (3.6 g). A 90 gr Sierra Matchking bullet is available for reloaders. The .223 Rem was first offered to the civilian sporting market in December 1963 in the Remington 760 rifle. In 1964 the .223 Rem cartridge was adopted for use in the Colt M16 rifle which became an alternate standard rifle of the U.S. Army. The military version of the cartridge uses a 55 gr full metal jacket boattail design and was designated M193. In 1980 NATO modified the .223 Remington into a new design which is designated 5.56×45mm NATO type SS109.

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Recent contents
  1. L

    WTB Steel Case .223 & .308

      1. Want to Buy
    • Seattle
    • Washington
    Looking for steel case .223 and .308, willing to buy brass case ammo as well. Let me know how much you have / send me an offer for what you got. I am in Seattle mid week, weekends I am either in the South Sound or up north in Bellingham. Thanks, Kevin
  2. Earrigo5

    PSA AR-15 PISTOL 5.56 10.5" CARBINE 1/7 NITRIDE 9” with Eotech and other upgrades

      1. For Sale
      2. For Trade
    • $1000
    • Springfield
    • Oregon
    Brand new never fired comes with a Eotech L3 sight. A stream light weapon light with pressure pad as well as a grip and aftermarket muzzle device. Also has A Bcm gunfighter charging handle. Magpul mbus flip up sights. Will come with a sba3 brace for parts. Only trade interest would be a 16” Ar...
  3. Tomato seed

    Stag Arms-15 A2 style

      1. For Sale
      2. For Trade
    • $700
    • Estacada
    • Oregon
    Stag Arms-15 A2 style upper with carry handle and peep site. Raised front post, carry handle is removable. Stag bolt carrier. I paid 475 plus shipping just for the upper. The lower is an Anderson Trump punisher with Stag parts kit. One 30rd mag with 150rds of frontier .556. Low rounds works...
  4. OrygunARMS

    8 lbs - Varget $339

      1. For Sale
      2. For Trade
    • $340
    • Beaverton
    • Oregon
    Change of plans for my 77gr HPBT project. 8 pounds, kept indoors, bought 6 months ago. Will only trade for: P365 FCU 365 pMM barrel/comp 365 xl pMM barrel/comp Icarus or mischief machine grip Partial trade for custom XL grip(s)
  5. GunRun

    Ruger Mini-14 in .223

      1. For Sale
      2. For Trade
    • $650
    • Salem
    • Oregon
    Asking for 650 but willing to negotiate. Comes with everything pictured. 2 x 20 round magazines 1 x 5 round magazine Cabelas soft rifle bag And TechSight rear sight 650 obo As far as trades go I'm mainly interested in handguns that accept glock magazines. PSA is good too. I'll try to...
  6. D

    700round case 556

      1. For Sale
    • $350
    • Portland
    • Oregon
    Looking to sell 700 rounds 5.56 stores in ammo can with desiccant packs. Rounds are loose in ziplock bag with desiccant packs for long storage. $350 cash local pick up in Portland 5.56, .223, 5.56 nato, ammo, ammunition
  7. D

    700 rnds 5.56 stores in ammo can

      1. For Sale
    • $350
    • Portland
    • Oregon
    Hey y’all, Selling off a can of 1000 rounds of DS Arms 5.56 brass cases ammo 55 grain FMJ ammo. Stored in can with desiccant packs to keep things fresh. Selling because I’m moving and can’t bring this stuff with me to Ireland. $300 OBO Portland metro area
  8. ALouBelow

    Aero Ar15 Pistol Eotech Carbine Daniel Defense Barrel Timney Trigger

      1. For Sale
    • $1100
    • Hillsboro
    • Oregon
    Selling my AR-15 Pistol. Aero Lower aero BCG Tnw billet upper Strike industries flash hider Pinned gas block Daniel defense 10.3 barrel Midwest industries cage hand guard Karve hand stop Pic rail for mounting light
    • Classified Ad
    • Handgun Classifieds
    • ALouBelow
    • .223 .556 ar-15 carbine danieldefense defense handgun pistol carbine timney trigger
    • Replies: 1
  9. WheatNuts

    Mixed 7.62x39 (785 rounds) and Igman .223 (500 rounds)

      1. For Sale
    • $480
    • Camas
    • Washington
    Need to come up with some cash so I'm looking to sell off some ammo. All of my ammo is always stored indoors. Pickup in East Vancouver. Selling the following: 1. Approximately 785 rounds (give or take) of mixed Wolf, Tula, and Golden Tiger, 122 and 123 grain FMJ 7.62x39. Comes with the ammo...
  10. T-Bro23

    Ruger American Ranch bolt action rifle 5.56/.223 $480

      1. For Sale
      2. For Trade
    • $480
    • Vancouver
    • Washington
    Excellent condition used Ruger American Ranch Rifle bolt action in 5.56/.223 caliber comes with scope, sling, and two 5-round magazines. Has threaded barrel. No box or accessories. Buyer pays FFL transfer fee in Portland/Vancouver area. Would be interested in trading toward S&W or Colt .357...
    • Classified Ad
    • Rifle Classifieds
    • T-Bro23
    • .223 .556 bolt action ruger ruger american ruger american ranch
    • Replies: 1
  11. J

    .223 62gr FMJ Armscor 100 round boxes

      1. For Sale
    • $45
    • Hillsboro
    • Oregon
    62 grain .223 (not 55 grain). Bought a 1200 round box. Only wanting to keep half. Have half a dozen 100 round boxes available. Let me know if interested! $45 per 100 round box.
  12. BurtonDouglass

    5.56 NATO & .223 REM - 758 rounds (SPF)

      1. For Sale
    • $280
    • Oregon City
    • Oregon
    Hey friends, I have accumulated way too much ammo. I know, a hard problem to have. I am passing on some of it to you fine people. I researched every round and my price per round is well below anything I could find on AmmoSeek. All ammo was kept in a humidity-controlled safe. I'd prefer a local...
  13. 1911FTW

    Dillion 550 press/ shotgun reloaded

      1. Want to Trade For
    • Vancouver
    • Washington
    I have a Dillion 550RL press: Comes with 9mm die, 223 and a hornady 6.5 Creedmoore. 9mm brass 40 cal brass And a box full of stuff. Everything works. Just don’t use it. Then I have a shot gun press. Believe it’s a Hornady press, not 100% Has 4lbs of powder. Looking to trade everything for...
  14. Major Payne

    Federal American Eagle .223 varmint tipped

      1. For Sale
    • Vancouver
    • Washington
    Up for grabs is a 500 round case of discontinued Federal American Eagle 223 varmint tipped $375 cash possible trade
  15. Tomato seed

    Loaded Diamondback DB-15.

      1. For Sale
      2. For Trade
    • $1000
    • Estacada
    • Oregon
    Diamondback DB-15 only 120 rounds through this. Quad rail. AR-15 scope. +flip up sights. Rubber grip . Vertical forgrip buffer tube and adjustable padded stock. 4-30 round mags $1000 trades: revolvers mini 30 mini 14 lever action .357 norinco firearms pc. carbine Ak anything outdoors motorcycle...
  16. dmmv

    Shield Arms AR-15 (new) + extras

      1. For Sale
      2. For Trade
    • $850
    • NW Portland
    • Oregon
    **SPF** Brand new Shield Arms AR-15 with some upgrades. Rifle runs $1100 before add-ones, priced to sell at $850 so I can work towards an SP5. Purchased as a complete rifle. Upgrades from front to back include: Magpul foregrip, pic rail and sling mount, milspec sling with QD swivel, K2 grip...
  17. varmintman

    Ruger Precision Rifle 223/5.56

      1. For Sale
    • $1000
    • Portland
    • Oregon
    Ruger Precision rifle in .223/5.56 Vortex copperhead 4x12x44 Vortex ar base Magpull Tripod $1200 complete package. Or $1000 for the rifle only. Funding a different project! :)
  18. Not-the-atf

    Selling entire collection!

      1. For Sale
      2. For Trade
    • $1
    • Beaverton
    • Oregon
    Let’s get these sold before I have to hold onto them for who knows how long after 114 goes into effect. The wife is wanting to do some work around the house so I need to liquidate a bit. Stag arms lower, can cannon upper BAD lever, 50 blanks $750 Andersen lower, quad rail, flip up sights...
    • Classified Ad
    • Rifle Classifieds
    • Not-the-atf
    • .223 .556 223 5.56 556 ar15 ak-47 ar-15 century estate handgun palmetto state armory
    • Replies: 1
  19. D

    A r-15 LWRCI-DIDirect Impingement 5.56/2.23 16.1"Tungsten gray

      1. For Sale
    • $1375
    • Beaverton
    • Oregon
    I switched out the LWRCI™ ADJUSTABLE COMPACT STOCK but I have it if u wish..... Direct Impingement Done Right. Step UP! The LWRCI™ Di is made with the same craftsmanship and design excellence that comes with every LWRCI™ firearm. Built from the ground up to be more than just another...
  20. D

    A r-15 LWRCI-DI Direct Impingement 5.56/2.23 16.1" Tungsten gray

      1. For Sale
    • $1900
    • Beaverton
    • Oregon
    I switched out the LWRCI™ ADJUSTABLE COMPACT STOCK but I have it if u wish..... Direct Impingement Done Right. Step UP! The LWRCI™ Di is made with the same craftsmanship and design excellence that comes with every LWRCI™ firearm. Built from the ground up to be more than just another...
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