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223/556

The 5.56×45mm NATO (official NATO nomenclature 5.56 NATO, fyv-FYV-six) is a rimless bottlenecked intermediate cartridge family developed in the late 1970s in Belgium by FN Herstal. It consists of the SS109, SS110, and SS111 cartridges. On 28 October 1980 under STANAG 4172 it was standardized as the second standard service rifle cartridge for NATO forces as well as many non-NATO countries. The 5.56×45mm NATO cartridge family was derived from and similar in dimensions to the .223, but is not totally identical to the .223 Remington cartridge designed by Remington Arms in the early 1960s.

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Recent contents
  1. .45's and .38's

    ACOG TA01B 223/556

      1. For Trade
    • Portland
    • Oregon
    Great condition acog. It's a 2008 model. I called trijicon with the SN It's a 223/556 reticle It was made in 2008 The light inside was redone to new condition for warranty work in 2021 I have seen the receipt and it's on record with trijicon. Trade for Aimpoint M4S , T2 , M5 , H2 Eotech EXPS 3...
  2. Tht_guy_josh

    Wtb bulk 223/556

      1. Want to Buy
      2. Want to Trade For
    • salem
    • Oregon
    Curious if anyone has any good deals locally before i order online. Have around 200 rounds of steel case 308 And 200 cash but can add for the right deal
  3. .45's and .38's

    12 GA trade for 223/556 only

      1. For Trade
    • Portland
    • Oregon
    Gresham Trade Slugs and 00 buck some target
  4. DDRanch

    Fully processed 223 and 300 Black Out range brass

      1. For Sale
    • Reno
    • Other
    I have some fully processed 223 and 300 Black Out range brass. 223 Brass $110.00 for a 1000 pieces or $150.00 for 1500 pieces shipped. 300 Black Out from mixed range brass $125..00 for a 1000 pieces or $165.00 for 1500 pieces shipped. I can mix or match. Also can do smaller or larger amounts...
  5. E

    WTS 223/556 Muzzle Devices

      1. For Sale
    • $70
    • Marysville
    • Washington
    -PWA FSC556 Comp/FS new $75 $65 shipped -Odin Works Atlas 5 (556/223) Comp new $70 $60 shipped **SOLD**
  6. Rogue4

    Norma 115gr 9mm trade for 223/556

      1. For Trade
    • Canby
    • Oregon
    ***5/24 Trade Pending*** I've got 750 rounds of 115 grain 9mm Norma ammunition that I'm looking to trade for 300 rounds of 223/556 (also new & brass) along the lines of 55 grain PMC X-Tac or Frontier? I'd take less rounds if you happened to have 68/69/75/77grain OTM. Please PM to keep the...
  7. T

    Once fired 223/556 brass, mixed headstamp

      1. For Sale
      2. For Trade
    • $40
    • Lacey
    • Washington
    Guessing based on weight I have around 1200 empty cases plus or minus a few. It's not processed at all, just picked up after shooting. The bulk of it is 556 brass. Buyer pays shipping if needed. $40 obo. Also looking for an SBA3 if you want to trade
  8. PORSCHE928S4

    Ruger American Ranch 223/556 bolt gun threaded

      1. For Sale
    • $375
    • Newport
    • Oregon
    I have a RAR does not take the AR mags but the Ruger proprietary one maybe 50 rounds down range and is threaded 1/2-28 people can vouch look at my reviews all of my stuff is as new just moving on to the 300 BO ! The cost new is $409 will do $375 cash at the ffl transfer is on you . I will get...
  9. J

    Colt 6920 Colt 223/556

      1. For Sale
    • $1585
    • PORTLAND
    • Oregon
    selling a colt 6920 shoots 5.56 and 223, really good condition. Only shot it a couple of times. It's got an aim point optic with Daniel defense rail and other upgrades. It's a California rifle and I haven't changed the 10 round mod. also selling .22lr ammo
  10. trekkerpaul

    Chinese factory 556 magazines- 3 left- offers and trades welcome

      1. For Sale
      2. For Trade
    • $75
    • Canby
    • Oregon
    Parted ways with the rifles, so these can go. These are current picture of the mags. These are NOS or very near mint condition. Deal can be made for multiple magazine purchase. Free shipping on 3 or more magazines purchased Offers welcome...…reasonable ones List is current: 7-10-24: 3-15...
  11. cbond50

    223/556 brass ammo wanted.

      1. Want to Buy
      2. Want to Trade For
    • Woodland
    • Washington
    Looking for bulk 223/556 brass cased loaded ammo. 55g 62g, etc. 500-1000 round lots il looking for. Brass cased loaded ammo only.
  12. Jeromepinoy

    Aero M4E1 complete upper 223/556 Trade for optic?

      1. For Sale
      2. For Trade
    • $450
    • Hillsboro
    • Oregon
    FS/FT a 11.5 Aero Precision complete upper with BCM CH and the BCG is from my Ruger AR 556 comes with AFG and a SIG Romeo7s brand new less than 500 rounds fired through it, just don’t use it anymore. Also interested in a trade for ammo or 600 cash. Trades looking for: 9mm 556 300 Blk.
  13. Jeromepinoy

    PSA 7.5 upper 223/556

      1. For Sale
      2. For Trade
    • $225
    • Hillsboro
    • Oregon
    FS/FT a 7.5 PSA Phosphate upper lightweight mlok, barely used right about 400 rounds comes with generic aluminum flip up sights, with CH but BCG for sale or trade asking 225 or looking for. 9mm ammo 556 ammo .300 Blk ammo
  14. Caveman Jim

    223/556 Stripper clips. Traded!!!

      1. Want to Buy
    • Elma
    • Washington
    Anybody have any that they would like to get rid of? I prefer new. Must be willing to ship. They stack nicely in my ammo cans. Conversations please. Wow, that was quick, trade pending!!! Thanks all.
  15. cbond50

    Looking for loaded 223/556 brass cased and 9 mm brassed case bulk ammo.

      1. Want to Buy
    • Woodland
    • Washington
    Looking for bulk ammo in 223/556 and 9 mm. Factory loaded ammo please, no reloads. Can't travel but will buy bulk in woodland, Washington
  16. D

    Smith and wesson 223/556

      1. For Sale
    • $400
    • SANDY
    • Oregon
    I bought this gun from a friend have never used it. Don't know much about it. Has the flashlight and all that. 500$ everything in the picture it comes with. No trades.
  17. Illuminaughty

    SGM 223/556 Saiga 30 Magazines (NEW)

      1. For Sale
      2. For Trade
    • $20
    • Eugene
    • Oregon
    Picked these up for a build, only to realize this pattern won't fit my lower😭. One package was opened, but mag never shot through. The remaining 2 are still unopened. Paid $28 a piece, asking $15 per or $40 for all 3 + $10 shipped CONUS (where legal only) Would trade for ak102/circle 10...

  18. 223/556 Die sets

      1. For Sale
    • $100
    • Banks
    • Oregon
    Hornady set with micrometer seating stem. RCBS Small base set. RCBS FL set. 223 Neck Sizer Multiple shell holders. $100 FTF in NE Hillsboro to banks areas No trades Shipping add $25 PayPal FF, Apple, Zelle Thanks for looking! Reno

  19. Reloaders stater kit RCBS Rock Chuck - Inline Fab mount - Powder Throw - Scales - 223/556 dies and various brass prep tools - 9mm dies - hand primers

      1. For Sale
    • $500
    • Banks
    • Oregon
    Bench, stand, RCBS Rock Chuck. Multiple sets of dies for 9mm and 223/556. Multiple extras. Scales. Bullet pullers. Prepping tools. Wet stainless tumbler. Extras for dies. Comparator. Calipers. 3d printed primer guide. Case trimmers. Hand primers. Some lube! And well extras, I’m too lazy and want...

  20. 223/556 Reloading components (large quantities) SOLD AS LOT ONLY WILL NOT SEPARATE

      1. For Sale
    • $500
    • Banks
    • Oregon
    The 9mm sale went fast so. Let’s do the 223/556 lot! I DID NOT COUNT THE BRASS, MEASURED WEIGHT IN HUMAN SCALE. Roughly 4-5 pounds of H335 Slightly less than 1 of 2520 Less than 2 of 2495 Less than 2 CFE223 Small amount of Leverevolution 1200 CCI 400s 200 BR4 500 Tul SRM Misc plastic cases...
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