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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. FireArm

    5.56mm AK

      1. For Sale
    • $500
    • Sheridan
    • Oregon
    Pioneer Arms imported
  2. FireArm

    AK

      1. For Sale
    • $500
    • Sheridan-Sherwood
    • Oregon
    $500 FIRM cash Polish Radom Underfolder Sporter
  3. M

    Browning Model Winchester 1885 Grade 1 High Wall - .223/5.56mm

      1. For Sale
    • $1600
    • Eugene
    • Oregon
    The only imperfection is some surface marring on the right side of the receiver. Otherwise looks perfect. Shoots .223 or 5.56mm 28" Octagonal barrel w/ 12:1 twist Made in Japan 株式会社ミロク製作所 (Miroku Firearms Co.) Scope is a Leupold VX-2 4-12X40mm
  4. D

    Federal Independence 5.56mm 62 Gr FMJ Ammo XM855I

      1. For Sale
    • $490
    • Maple Valley
    • Washington
    Good afternoon NWF. Federal Independence 5.56mm 62 Gr FMJ XM855I ammo for sale.490$ for 1000 rounds. Can include ammo can for extra 20$.2000 rounds available. Please keep post clean - DM me with questions. Here is link for ammo info...
  5. GSchreiberPDX

    Lightly Used Colt M4 5.56MM LE Carbine with Optics and Extra Magazines

      1. For Sale
    • $900
    • Portland
    • Oregon
    Lightly used Colt M4 5.56MM LE carbine with extras. Magpul furniture, Aimpoint Patrol Rifle (12841) 2 MOA red dot sight, Vortex VMX-3T flip mount 3X magnifier, one 30 round PMAG Magpul magazine, four 40 round PMAG Magpul magazines coupled in twos (only one pictured, but I have all four), and...
  6. 357SigGuy

    Keltec RDB Bullpup - FDE - 5.56mm NATO

      1. For Sale
    • $525
    • Washougal
    • Washington
    Like no ordinary bullpup, the RDB series of rifles redefines the platform. You've never experienced balance or a trigger quite like this in any other design. The RDB is completely ambidextrous due to its patented downward-ejection, magazine catch/release placement, intuitive safety and...
  7. baseballplerrr

    SMITH & WESSON M&P15 VOLUNTEER XV, 5.56MM, 16" RIFLE PACKAGE W/ 10X 30RD MAGS, RED DOT, & GEMTECH SUPPRESSOR $999

    https://battlehawkarmory.com/product/smith-wesson-mp15-volunteer-xv-5.56mm-16-rifle-package-w-10xsmith-wesson-mp15-volunteer-xv-5.56mm-16-rifle-package-w-10x-30rd-mags-red-dot-gemtech-suppressor-30rd-mags-red-dot-gemtech-suppressor?trk_msg=EBKNLUGOSM6479B68836IEK5BS&trk_contact=7RH0H15T75BK5FR4IK...
  8. jessygirl20150

    Sig Sauer MCX Virtus Rifle, 16", with Sig Romeo 5

      1. For Sale
    • $1700
    • Wilsonville
    • Oregon
    New Sig Sauer MCX Virtus Rifle, 16" Barrel, 5.56mm NATO. Only 100 rounds down the pipe. Comes with: - Sig Romeo 5. - 3 x 30 round Pmags. **Bipod not included.** No trades, please do not ask. - $1700 cash
  9. 3

    Reduced: Rock River Arms LAR-15 Elite, 5.56, Many upgrades, never fired by original owner.

      1. For Sale
    • $700
    • Hillsboro
    • Oregon
    Caliber 5.56x45mm NATO Quad Rail with Ergo Grip rail covers. 16" Chrome lined barrel. Match 2 stage trigger. Wilson Combat TC-CHR extended charging handle. Wilson Combat TR-BCA-NP3 coated Bolt Carrier Assembly. LMT SOPMOD adjustable buttstock. Smith Enterprises Vortex Flash hider. CC&G...
  10. B

    V-Seven Sovereign 14.5 5.56mm Rifle

      1. For Sale
    • $1950
    • Sutherlin
    • Oregon
    Used in excellent condition factory complete V-Seven Sovereign Ambi 14.5" 5.56mm rifle for sale. Bare rifle weighs 4lbs 11.7oz (weight shown below is with a different grip). Too many features to list, so please see the attached link for a list of everything on this rifle. Pinned and welded to...
  11. B

    V-Seven Sovereign 14.5 5.56mm Rifle

      1. For Sale
    • $1950
    • Sutherlin
    • Oregon
    Used in excellent condition factory complete V-Seven Sovereign Ambi 14.5" 5.56mm rifle for sale. Bare rifle weighs 4lbs 11.7oz. Too many features to list, so please see the attached link for a list of everything on this rifle. Pinned and welded to 16" so not an SBR. Made right here in Roseburg...
  12. 357SigGuy

    KelTec RDB-17 - 5.56mm - 17" - M-Lok - Tan - Bullpup (Oregon Only)

      1. For Sale
    • $560
    • Washougal
    • Washington
    This is a great bull-pup rifle with less than a hundred rounds through it. RDB stands for Rifle Downward-ejecting Bullpup and the 17 points to the barrel length. This variant is the original and features a high-impact resistant Zytel forend with built-in Picatinny-style rail on the bottom for...
  13. Owaissoo

    Smith & Wesson M&P Sport II 5.56mm NATO 16in

      1. For Sale
    • $500
    • Beaverton
    • Oregon
    Selling my Smith & Wesson M&P Sport II 5.56mm NATO 16in. Bought new and have owned this rifle for a few years but have shot less than 200 rounds through it. Downsizing my AR collection Upgrades: Magpul handguard Magpul grip Magpul flip up sights Magpul stock Mlok Hand stop $500 cash Buyer...
  14. FireArm

    AK

      1. For Sale
    • Sheridan Sherwood
    • Oregon
    Ak 556
  15. T

    Geissele Super Duty 14.5" Stripped Upper Receiver AR-15 5.56mm in Desert Dirt Color DDC Factory Wrapped

      1. For Sale
    • $875
    • Portland
    • Oregon
    Hello, I am selling my Geissele 14.5" Stripped Upper Receiver 5.56 in DDC. Asking $875 OBO. Comes with factory box and is factory sealed. I included a picture of what it could look like mounted. Thanks Cartridge 5.56x45mm NATO Color Desert Dirt Color Finish Anodized Material Aluminum...
  16. Juniper9mm

    IMI M193 5.56mm 480 Rnd Case $216 (.45 cpr)

      1. For Sale
    • $216
    • EAGLE POINT
    • Oregon
    IMI M193 5.56mm 480 Rnd Case I do not come up to Portland very often, but perhaps you have a friend whose a trucker, or comes down to meet up with family. For Kfalls folks, I will meet at the summit of 140. For those on the Southern Oregon Coast, I will meet in Grants Pass. $240 No Trades
  17. snewocnhoj

    PMC X-TAC, 5.56mm (M855), 62 Grain, Green Tip Ammo

      1. For Sale
    • $168
    • Eugene
    • Oregon
    I sold my AR15 and have 21 boxes (20/box) for a total of 420 rounds @ $0.40/ round of PMC X-TAC 5.56. These rounds contain the M855 penetrator bullet and are loaded with the SS109 steel core penetrator projectile under the full metal jacket. This 5.56 green tip ammo effectively blends its lead...
  18. nbuchanan

    Super Duty MOD1 Complete Upper, 13.9, 5.56mm

      1. For Sale
    • $800
    • Shoreline
    • Washington
    - Geissele 13.9 complete upper (pin and welded) - hux flash hider - 200rds through upper
  19. nbuchanan

    URG-I Complete Upper, Near Clone, 10.3" Variant, 5.56mm

      1. For Sale
    • $1000
    • Shoreline
    • Washington
    FACTORY 10.3 Geissele URGI *near clone* upper - I’ve fired zero rounds through it - no box
  20. baseballplerrr

    Unopened Can BPS 5.56mm NATO 55gr M193 FMJ Ammo - 500 Rounds trade for .300blk ammo

      1. For Sale
      2. For Trade
    • $180
    • Sandy
    • Oregon
    Brand new, never opened can. $180 cash or trade for .300blk ammo, pref subsonic.
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