Sporting Systems
J&B Firearm Sales
Bear Creek Arsenal
Southwest Firearms
Oregon Rifleworks
JavaScript is disabled
Our website requires JavaScript to function properly. For a better experience, please enable JavaScript in your browser settings before proceeding.

  • Join the #1 community for gun owners of the Northwest

    We believe the 2nd Amendment is best defended through grass-roots organization, education, and advocacy centered around individual gun owners. It is our mission to encourage, organize, and support these efforts throughout Oregon, Washington, Idaho, Montana, and Wyoming.

    Free Membership Benefits

    • Fewer banner ads
    • Buy, sell, and trade in our classified section
    • Discuss firearms and all aspects of firearm ownership
    • Join others in organizing against anti-gun legislation
    • Find nearby gun shops, ranges, training, and other resources
    • Discover free outdoor shooting areas
    • Stay up to date on firearm-related events
    • Share photos and video with other members
    • ...and much more!

5.56 ar15

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. Though they are not entirely identical, the 5.56×45mm NATO cartridge family was derived from and is dimensionally similar to the .223 Remington cartridge designed by Remington Arms in the early 1960s.

View More On Wikipedia.org
Recent contents
  1. 46Kuma

    Vltor (5.56) complete upper and lower

      1. For Sale
    • $1400
    • Sherwood
    • Oregon
    Selling together as a package Vltor MUR with Noveske keymod hand guard, Noveske 16" SS barrel/gasblock and battle comp break. Vltor lower with EMOD stock Vortex Viper PST 1-4x24 Low round count $1400 (or w/optic $1700) no trades
  2. u8racing

    Springfield Saint AR 5.56 Pistol, NEW

      1. For Sale
    • $1250
    • Fairview
    • Oregon
    Purchased new from Northwest Armory, never fired after purchase, with carry case and lots of upgrades. Vortex Red Dot. Magpul front grip and MOE main grip. Streamlight and switch with Cloud Defense mounts. Magpul extended bolt release. Odin works extended mag release. Geissele S3G trigger...
  3. D

    .223 ammo

      1. For Sale
    • $400
    • Tigard
    • Oregon
    Approx 800 rounds off .223 available, looking to sell in one lot, mixed manufacturers, mostly brass ammo some Tula Not interested in trades
  4. demonsfire813

    Smith & Wesson M&P Sport II AR15 5.56. *price drop*

      1. For Sale
    • $500
    • Salem
    • Oregon
    I have a Smith & Wesson M&P Sport II chambered in 5.56 up for sale today. It's been a great rifle for me for a few years. I just finally upgraded so I don't need this one anymore. Never had any issues with it. It'll come as-is in the pics with a picatinny quad-rail handguard installed...
  5. JusticeBeaver

    10.5” PSA upper, Anderson Lower, 40 rnd mag

      1. For Sale
      2. For Trade
    • $650
    • Gresham
    • Oregon
    -10.5” PSA upper with Magpul FDE handguard (specs: https://palmettostatearmory.com/psa-10-5-5-56-nato-1-7-phosphate-moe-upper-with-bcg-ch-flat-dark-earth.html) -Anderson Lower (blank for custom engraving) and lower parts -Strike industries shorter 5” buffer tube in FDE -QD backplate -Sightmark...
  6. Hunterhowie

    5.56 NATO 1200 rounds Bulk deal Best offer by 12am tonight.

      1. For Sale
    • $900
    • Tigard
    • Oregon
    Winchester M855 5.56mm 62 Grain Green Tip FMJ Ammunition I have 4 BOXES available a total of 800 Rounds, 1 box = 200 Rounds __________________________________________________________________________________ ONE CAN Federal Premium 5.56 Nato 55 Grain Full Metal Jacket Can of 400 Rounds I'm in...
  7. Gunbuggy

    Dirt cheap brand new Ar15 $525!!!

      1. For Sale
      2. For Trade
    • $525
    • Vancouver
    • Washington
    Come get this brand new AR. It’s dirt cheap, rattle canned, accessorized, and it’s never been fired. You can’t build this for cheaper than I am asking. There’s a few small little scuffs on the paint from it getting rubbed up against when sliding stuff in and out of the safe. It’s a complete...
  8. Trweber23

    PSA 10.5" 5.56 complete upper, unfired.

      1. For Sale
      2. For Trade
    • $275
    • Sherwood
    • Oregon
    PSA 10.5" CARBINE-LENGTH 5.56 NATO 1/7 PHOSPHATE LIGHTWEIGHT M-LOK SLANT 12" UPPER - WITH BCG & CH - 5165448530 SKU: 5165448530 UPC: 5165448530 MFR#: 5165448530 Barrel Length: 10.5" Barrel Profile: A2 Gas System: Carbine-length Barrel Steel: 4150V Chrome Moly Vanadium Barrel Finish: Phosphate...
  9. ScaldingCookies

    AR-15

      1. For Sale
      2. For Trade
    • $500
    • Vancouver
    • Washington
    This rifle is a TN Arms Co lower with a PSA kit and an upper by I believe Midwest. Chambered in .223 Wylde so it will shoot 5.56 or .223. It's gone through about 500 rounds. Was my first rifle build. Functional. Accurate. Cheap. Magpul front and rear sights included but unattached because I hate...
  10. F

    Ghost Firearms Rifle Kit, 5.56, M-LOK Rail - Blue Titanium Cerakote

      1. For Sale
      2. For Trade
    • $360
    • Portland
    • Oregon
    NEW - Ghost Firearms Rifle Build Kit - 16" 5.56 Barrel w/ 14" M-LOK Rail - Blue Titanium Not sure if this should be posted here or in the Parts & Accessories Section, but it's almost a complete rifle: Hopefully this will be of interest to someone. I bought this kit to build with the Mrs but...
  11. Ammo master

    5.56 16” barrel/ gas block -tube

      1. For Sale
    • $60
    • Portland
    • Oregon
    Bca 16” mid length 5.56 1-7 twist 4150 m4 contour barrel, gas block, ss gas tube. $60
  12. cybersomatix

    Anderson AR-15

      1. For Sale
    • $550
    • Portland
    • Oregon
    Decent basic AR-15. Comes with Streamlight ProTac flashlight & Sling. Great for an introductory rifle. Approx round count: 500 $550 OBO Buyer pays xfer fee and BGC.
  13. Erock

    NIB/unfired Sig Tread 11” 5.56 upper complete

      1. For Sale
      2. For Trade
    • $400
    • Oregon City
    • Oregon
    Thanks for looking! This is a brand new 11” Sig DI upper, unused, in box, with BCG and charging handle. No accessories have been mounted. Offers considered. Bought the pistol for the lower, so this is extra. $400
  14. M

    NIKON CAMERA LENSES

      1. For Trade
    • Portland
    • Oregon
    I have four nice Nikon camera lenses, two never mounted to camera body, the other two used but in great condition. NIKON DX VR-P NIKKOR 18-55mm 1:3.5-5.6G NIKON DX AF-P NIKKOR 70-300mm 1:-4.6-6.3G ED NIKON ED AF-S nikkor 17-35mm 1:2.8D NIKON ED AF NIKKOR 80-200 1:2.8D Looking for a...
  15. .45's and .38's

    RRA LAR-15 16" AR15

      1. For Trade
    • Happy Valley
    • Oregon
    For trade or sale is my factory LAR15 16" Rifle. This has a extremely low round count like new & was stored for years. This is made by Rock River Arms and shoots 5.56 NATO/223 This is a Mil Spec AR15 with a 16" Heavy profile threaded barrel. & collapsible Rogers super stock. I have upgraded...
  16. R

    WTS OR  PSA stainless pistol upper

    Help send an old Marine to Hawaii. My wife is taking her elderly father to Hawaii at the end of the month to visit his old base and pearl harbor one last time and I'm trying to add a few bucks to her wallet for the trip. PSA 11.5 stainless steel pistol upper with 1:7twist and magpul furniture...
  17. thenabbster

    WTS WA  Custom Build .223 Wylde AR-15, Built to high standard!

    For Sale: Year old custom built AR-15 .223 Wylde, able to shot .223 or 5.56. This rifle has roughly 1 thousands rounds shot through it, in like new condition. I am returing to school and will not have time to shoot it, which is why its for sale. Very little expense was spared in this build and...
  18. Sealesniper

    What Rifle and Ammo can Achieve This

    Yesterday I came across this picture and it got me thinking what rifle does the shooter have or what rifle and bullet caliber, loads could achieve this ballistic ?
  19. MtHummel

    WTS OR  Tavor SAR-B16 16.5" 5.56

    !
  20. MtHummel

    WTS OR  Tavor SAR-B16 16.5" 5.56

    !
Southwest Firearms Forum
Bear Creek Arsenal
Sporting Systems
Cerberus Training Group
Back Top