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5.56mm

The 5.56×45mm NATO (official NATO nomenclature 5.56 NATO) 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, but is not identical to, the .223 Remington cartridge designed by Remington Arms in the early 1960s.

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Recent contents
  1. N

    Wooden Crate Small Arm Ammunition 5.56MM Ball M193, 1000 RDS. Made in Korea

      1. For Sale
    • $350
    • Portland
    • Oregon
    A Wooden Crate of Small Arm Ammunition 5.56MM Ball M193, 1000 RDS. Made in Korea 5.56MM BALL M193 LOT NO.: PS-E5-789 NET WT.: 26 LBS. GROSS WT.:36 LBS SIDE PANEL READS: 1.4S Weight on 2 different scales = 35.4# and 35.2#
  2. misterarman

    CCI No. 41 Primers [for 5.56mm Ammunition]

      1. For Sale
      2. For Trade
    • $90
    • Vancouver USA
    • Washington
    Want to Trade CCI No. 41 Primers [for 5.56mm Ammunition] for CCI #500 Small Pistol Primers Want To Sell $90 I Am now offering a cash price for these. I want to turn them into CCI small pistol primers and a straight trade would be the most efficient way to do that but that has not happened so...
  3. Sandurz

    Winchester 5.56mm 55 Grain FMJ

      1. For Sale
    • $10
    • Portland
    • Oregon
    $10 a box 8 boxes available, 20 rounds per box. I also have another 46 rounds not in boxes as I pulled them from magazines.
  4. S

    Geissele URG-I Complete, 10.3" Variant, 5.56MM

      1. For Sale
    • $1000
    • Tumwater
    • Washington
    For sale a complete geissele URG-I upper. These where $1200 new, and this one is practically brand new. They are now unubtanium. 1k in the Olympia Tumwater area.
  5. Maximum Magnum

    PSA CAR-15 Clone (AR-15 Commando Pistol)

      1. For Sale
    • $500
    • Beaverton
    • Oregon
    PSA 11.5” CARBINE-LENGTH 5.56 NATO 1/7 NITRIDE BTR CLASSIC PISTOL W/CARRY HANDLE As-new awesome AR-15 "pistol" in the style of the classic commando Colt CAR-15 from the classic movie "Heat." Chambered in 5.56 NATO / .223. Purchased new three months ago, and I only tested for accuracy and...
  6. CamoCrocKiller

    M200 5.56mm Blanks

      1. For Sale
    • $80
    • Silverton
    • Oregon
    Have 152rd of blanks in 5.56. Also come with a Blank fire adapter that will allow you to cycle these rounds.
  7. FireArm

    BCA 5.56mm upper $220

    https://www.bearcreekarsenal.com/calibers/223-wylde/223-wylde-complete-uppers/223-wylde-16-parkerized-m4-barrel-1-8-twist-carbine-12-handguard-scg2.html
  8. M

    200 round range pack Winchester 5.56mm 55gr Brass

      1. For Sale
    • $100
    • Vancouver
    • Washington
    200 round range pack Winchester 5.56mm 55gr Brass $100
  9. FireArm

    16” 5.56mm AR15

      1. For Sale
      2. For Trade
    • $550
    • Sheridan
    • Oregon
    Everything is new except the magazine, rifle is unfired. Anderson upper/lower/LPK Ambi selector 45 degree Cheapo Supremo 45 degree sights MTF stock and pistol grip (grey) Magpul vertical grip and Mlok rail covers (grey) Alpha shooting sports barrel and BCG Foxtrot Mike 15” rail Okay industries...
  10. gunjunky

    5.56mm MK 262 from Black Hills 77gr OTM

      1. For Sale
    • $400
    • Arlington
    • Washington
    The finest 5.56 round available. Extremely accurate and 77gr. 1 460 round ammo can. $400
  11. SunTzu

    Used AR-15 Barrel: Rock River 16" HBAR 5.56mm

      1. For Sale
    • $80
    • Camas
    • Washington
    Used AR-15 Barrel: Rock River 16" HBAR 5.56mm Location: Camas, Washington Price: $80- Details: 16" HBAR from Rock River Arms in good used shape. Chromemoly with 1/9 twist. This has a higher round count (8-10k) but it still groups nicely. about 2" with Lake City 55gr XM193, with good enough...
  12. C

    IMI 5.56mm M193 1200 CARTRIDGES (just received 08/27)

      1. For Sale
    • $640
    • Hillsboro
    • Oregon
    >>>>>>>>> SALE PENDING <<<<<<<<< IMI 5.56×45mm NATO M193 ammunition RECENT PURCHASE FROM MIDWAY USA NEW PRODUCTION (as new as it gets) TIMELINE ~ ORDERED - 08/22/2021 RECEIVED - 08/27/2021 DAMAGED TOOTH - 08/29/2021 Selling due to above mentioned "dental issue" ~ to fund DMD IMI...
  13. ScarceResource

    Sig Sauer M400 Tread 11.5" 5.56mm AR Pistol

      1. For Sale
      2. For Trade
    • $800
    • Portland
    • Oregon
    Excellent condition & very reliable. Never had a malfunction with any ammo. I'm a lefty & really prefer shooting fully ambi lowers, so this one has to go. Has a few upgrades: SIG's little piece of thin pic rail you need to mount BUIS, UTG BUIS, Wilson Combat extended bolt release, BCM M-Lok...
  14. M

    WTT MK262 for 7.62x39

      1. For Trade
    • Southern Portland Metro Area
    • Oregon
    I AM NOT INTERSTED IN SELLING THIS AMMUNITION. I ONLY WANT TO TRADE FOR THE AMMUNITION LISTED BELOW. Want to trade 250 (5 boxes) rounds of Black Hills MK262 for 1000 rounds of Wolf 7.62x39. The Wolf will need to be in boxes and preferably in a sealed case. It will also need to be...
  15. Not BATFE

    Rosco Bloodline 5.56mm 14.5” Mid Length Gas 1/7”

      1. For Sale
    • $125
    • Spokane Valley
    • Washington
    Bought this BBL off Reddit from a guy who said it was Carbine Gas, and it was hard to tell from his picture. It showed up and is definitely Mid Length Gas. Need a Carbine Gas BBL for a project with an AEM5. Brand new in box!
  16. benja455

    SilencerCo ASR Muzzle Brake (.223 cal / 5.56mm: 1/2 x 28)

      1. For Sale
      2. For Trade
    • $65
    • West Seattle
    • Washington
    Barely used. .223 cal / 5.56mm: 1/2 x 28 (AC142) Will post an actual photo later. I will ship. Cash: - $80, shipped Trades: - .30 cal / 7.62mm: 5/8 x 24 (AC591) - 9mm or 38 special ammo
  17. Bencisn

    500 Round Case - 5.56mm 62 Grain Green Tip

      1. For Sale
      2. For Trade
    • $345
    • Renton
    • Washington
    No markup, just looking to get what I paid. You won’t find these at any of the local shop. $345 cash
  18. S

    5.56MM NATO SIG SAUER SIG 556-008 DMR 21" MATCH GRADE HEAVY BARREL 1 IN 10 TWIST NEW 21 INCH " BARREL

      1. For Sale
      2. For Trade
    • $2500
    • Vancouver
    • Washington
    Harris bi-pod is not included. 5.56MM NATO SIG SAUER SIG 556-008 DMR 21" MATCH GRADE HEAVY BARREL 1 IN 10 TWIST NEW 21 INCH " BARREL This rifle has a mach grade trigger installed from the Sig Sauer factory, Less then 300 rd of ammo is shot, 1 in 10 Twist allow to get a outstanding accuracy with...
  19. BigNickShooting

    Winchester Ranger LE 5.56mm Ammo -- M855 "Penetrator"

      1. For Sale
      2. For Trade
    • $25
    • Centralia
    • Washington
    I have for sale 16 boxes (20rds each) of Winchester Ranger 5.56mm M855 "Penetrator" green tips ammo. (RA556M855K) Marked LE only ... I'd like to sell them as a lot for $400. Notax, shipping charges, etc. $25/box. In Centralia, WA. Now that the Government allows Citizens to buy F-15's and...
  20. M

    200 round range pack Winchester 5.56mm 55gr Brass

      1. For Sale
    • $175
    • vancouver
    • Washington
    200 round range pack Winchester 5.56mm 55gr Brass $175
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