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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. Art_Vandelay

    Dissipator AR-15 Upper - PSA

      1. For Sale
    • $210
    • OREGON CITY
    • Oregon
    Up for sale is a brand new PSA Dissipator. It's a 16" midlength AR with a rifle length handguard. Check PSA's website for any more details needed. $210. Bought two of these and don't need the second. Will come with the box it shipped in. Can include a NIB PSA 5.56 nitride BCG if needed as well...
  2. E

    SOLGW NOX Flash Hider 5.56mm 1/2x28

      1. For Sale
    • $70
    • Salem
    • Oregon
    This is the 6 port version. Lightly used, near perfect condition but doesn't have any shims. Will ship continental USA: Paypal/Venmo. Otherwise can meet in the Salem area.
  3. laodunfa

    IMI 5.56mm 62gr Green Tip FMJ M855

      1. For Sale
    • $11
    • Beaverton
    • Oregon
    5.56mm 62gr green tip FMJ M855 ammo made by Israel Military Industries 20 per Box; totally 24.5 box (490 rounds) asking $11 per box ($0.55 per round) If you take 24 boxes, the half box and the ammo can is yours for free. total price is $264 Local to Portland metropolitan area only. No shipping.
  4. S

    Anderson AM15-BR 5.56mm

    Anderson AM15-BR 5.56mm NATO 16in Black Semi Automatic Modern Sporting Rifle - 30+1 Rounds $399.99 at Sportsmen's Warehouse. Any first hand experience?
  5. B

    Son's of Liberty Gun Works 13.7" EX02 5.56mm rifle

      1. For Sale
    • $1000
    • Roseburg
    • Oregon
    SOLGW 13.7" 5.56mm EXO2 rifle for sale. Factory barreled upper with pinned and welded KNOX (Keymo) which makes it 16", 1/7" twist 5.56mm, mid-length gas, with SOLGW BCG, and a SOLGW branded Radian Raptor LT charging handle. Lower is factory SOLGW Rebellious Stripes with a Larue MBT2S straight...
  6. viscerlaee

    AR-15 stag upper, saa lower - 5.56mm NATO $300

      1. For Sale
    • $300
    • Tualatin
    • Oregon
    I bought these from Oregon rifle works new and assembled the upper and lower together. It has the bolt assist lever or BAD lever by the trigger assembly. It makes pulling the bolt to the rear more fluid for a right handed person. It fires 5.56mm NATO rounds. I built this to maintain while I was...
  7. F

    1000 Round Case 5.56mm 62 Grain FMJ SS109 Brass Case Prvi Partizan Ammo $389.50 Free Shipping

    https://www.sgammo.com/product/223-556mm-ammo/1000-round-case-556mm-62-grain-fmj-steel-core-ss109-brass-case-prvi-partizan-
    • Classified Ad
    • Great Deals
    • FourTeeFive
    • 5.56mm ammunition brass case prvi prvi partizan round shipping
    • Replies: 1
  8. B

    Sons of Liberty Gun Works (SOLGW) 13.7" EX02 5.56mm Rifle

      1. For Sale
    • $1100
    • Roseburg
    • Oregon
    SOLGW 13.7" 5.56mm EXO2 rifle for sale. Factory barreled upper with pinned and welded KNOX (Keymo), 1/7" 5.56mm, with SOLGW BCG, SOLGW branded Radian Raptor LT charging handle. Lower is factory SOLGW Rebellious Stripes with a Larue MBT2S straight bow trigger, Radian Talon ambi safety, Springco...
  9. S

    Stainless Ruger Mini-ranch .223/5.56mm

      1. For Sale
    • $1000
    • Portland
    • Oregon
    bought in 2003 been in a tactical case ever since... only 300 rounds thru it. Black nylon stock, (2) magazines, a sling and Ruger tac case... I'm in a wheelchair now and can't shoot.
    • Classified Ad
    • Rifle Classifieds
    • stephd4evr
    • 15 & 20 round magazines 5.56mm black nylon stock excellent shape less than 300 rounds through her mini-ranch 14 ruger semi-auto stainless very accurate with iron-sights wife's critter getter
    • Replies: 1
  10. FireArm

    Ruger American Ranch Black/FDE Bolt Action Rifle - 5.56mm NATO

      1. For Sale
    • $500
    • sheridan sherwood
    • Oregon
    I will be in Bend on the 12&13 if anyone out there is interested new, no box, comes with 5rd and 10rd mag. has a muzzle device on it. $500 cash willing to meet from Portland to Salem, Oregon City to Lincoln City, you choose the FFL, I can meet Thursday through Sunday If your out of State...
  11. B

    1k rounds IMI 62gr 5.56mm M855

      1. For Sale
    • $435
    • Roseburg
    • Oregon
    1,000 rounds (2x 500 round cases) of IMI 62gr 5.56mm M855 ammunition for sale. In my opinion, this is the best M855 on the market. Sold as one lot only. $435.00 CASH picked up in Roseburg or Sutherlin. NO TRADES
  12. SunTzu

    SOLD Supressor QD Mounts & Muzzle Devices (A LOT)

      1. For Sale
    • $300
    • Portland
    • Oregon
    LOCATION: Portland Metro. Price: $300 for entire lot (50% off of new) Up for sale is a lot of QD mounts and muzzle devices for any industry standard 1.375x24 Suppressor. The muzzle devices (flash hiders and compensator) are in 1/2x28 & 5/8x24 (5.56mm & 308 win/300blackout). Brands are...
  13. B

    IMI 62gr 5.56mm M855

      1. For Sale
    • $450
    • Roseburg
    • Oregon
    1,000 rounds (2x 500 round cases) of IMI 62gr 5.56mm M855 ammunition. In my opinion, this is the best M855 ammo available. Sold as one lot only. $450.00 cash picked up in Roseburg or Sutherlin NO TRADES
  14. Worksjo

    Daniel Defense MK12 5.56mm

      1. For Sale
    • $1575
    • Keizer
    • Oregon
    Selling my Daniel Defense MK12 5.56mm (18” barrel) comes with 5 Magpul mags and Factory case. Everything is as it came from the factory. 150-200 rounds fired in a couple range trips then I cleaned it and it has sat in the safe since. Condition is excellent and like new. ~700 rounds of factory...
    • Classified Ad
    • Rifle Classifieds
    • Worksjo
    • .223 5.56 4-24 5.56mm daniel defense defense mk12 spr strike vortex optics vortex strike eagle
    • Replies: 3
  15. Maximum Magnum

    Premium PSA AR-15 in 5.56mm with Primary Arms MicroPrism 3x green reticle

      1. For Sale
    • $770
    • Beaverton
    • Oregon
    This was a build I did last year and it turned out really sweet, but I'm going to instead focus on an Aero Precision build that I started in earnest last week. I know people talk a lot of bubblegum about PSA, but I love their stuff. I've bought or built over a half-dozen PSA rifles and they've all...
  16. S

    WTS: Arsenal SAM5 5.56mm AK New in Box

      1. For Sale
    • $2000
    • Las Vegas
    • Other
    Brand new in box Arsenal SAM5 milled receiver 5.56mm including polymer furniture and intermediate length stock, factory double hook trigger, factory 14x1mm shark fin muzzle brake - which can be used with bayonet, and 20 round magazine $1900 + shipping. Factory 6x5 bayonet available to buyer...
  17. B

    SOLGW 13.7" EXO2 5.56mm Rifle with extras

      1. For Sale
    • $1100
    • Roseburg
    • Oregon
    SOLGW 13.7" 5.56mm EXO2 rifle for sale. Factory barreled upper with pinned and welded KNOX (Keymo), 1/7" 5.56mm, with SOLGW BCG, and a SOLGW branded Radian Raptor LT charging handle. Lower is factory SOLGW Rebellious Stripes with a Larue MBT2S straight bow trigger, Radian Talon ambi safety...
  18. Grobari01

    FN 15 TAC3 Carbine 5.56MM

      1. For Sale
    • $1050
    • Vancouver
    • Washington
    FN-15 TAC3 5.56 carbine, brand new unfired still in the box. Comes with a box of ammo and a FN factory 30rd magazine. Asking $1050, buyer pays transfer fee. For any questions text 541-668-5290.
  19. af306

    Noveske 5.56mm barrel, 13.7" long, $250 shipped

      1. For Sale
    • $250
    • Lake Oswego
    • Oregon
    2012 Noveske SS Infidel 13.7" 5.56mm 1:7 twist. Mid length gas system. New, never fired. Includes Noveske low profile gas block and barrel nut and mid length gas tube and pins. $400 new. $250 includes tracked and insured shipping.
  20. fiveshot

    CZ Bren 2 Pistol 11" Barrel 5.56MM, HBI Handguard and a few other mods.

      1. For Sale
    • $1800
    • RENTON
    • Washington
    SOLD SOLD SOLD
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