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5.56x45mm

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.

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Recent contents
  1. O

    Hornady 5.56 77gr OTM

      1. For Sale
    • $340
    • Seattle (Burien)
    • Washington
    5.56 77gr OTM. Hornady Frontier FR262. Twenty - 20 round boxes.
  2. ricks4ammo

    Winchester M855 Green Tip 5.56 62g FMJ 1000 rounds

      1. For Sale
    • $450
    • Salem
    • Oregon
    1000 rounds Winchester 5.56 Full Metal Jacket/Green Tip (62g) M855 NEW ammunition. Price: $450 Located in south Salem near the Safeway @ Commercial St SE and Fabry Rd SE.
  3. saxon70

    Winchester USA 5.56x45mm

      1. For Sale
    • $425
    • Vancouver
    • Washington
    Winchester USA M193 5.56x45mm NATO Ammo 55 Grain Full Metal Jacket Case of 1000 Price is $425 FTF in Vancouver Washington
  4. BVB

    5.56x45mm M193 55gr.

      1. For Sale
    • $0
    • Portland
    • Oregon
    Igman 5.56x45mm M193 55gr. 1000rds. $400 Will meet in Portland metro area.
  5. JohnH

    5.56x45MM 55 Grain & M855 Ammo w/Can

      1. For Sale
    • $175
    • Milwaukie
    • Oregon
    19 Boxes of Federal 5.56x45MM 55 Grain practice/training ammo, 380 rounds total 4 Boxes of Winchester 5.56x45MM 62 Grain M855 zombie ammo, 80 rounds total 460 rounds total ammo in nice 30 Cal steel ammo can for $175
  6. Kevin761o8fiu

    Igman 5.56x45mm M193 - Case of 1000

      1. For Sale
    • $400
    • Eugene
    • Oregon
    1000 rounds in an unopened case. I am preparing for a cross country move so looking to downsize ammo stash temporarily. No shipping, but willing to meet anywhere decently close.
  7. F

    5.56x45mm NATO Winchester Target Round Range Pack, Green Tip

      1. For Sale
    • $99
    • Woodinville
    • Washington
    - 200 rounds in range pack. Unopened box. - 62 grains/FMJ/3060 FPS - Have been stored in a cool, dry, humidity and climate controlled environment. - Not reloads - No trades; cash only I'd like to exchange at my gun club in Woodinville.
  8. F

    5.56x45mm NATO Wolf Performance Ammunition (35 new boxes)

      1. For Sale
    • $296
    • Woodinville
    • Washington
    - 55 grain/FMJ/20 cartridges - Selling as a lot with all 35 boxes - Have been stored in a cool, dry, humidity and climate controlled environment. - Not reloads - No trades; cash only I'd like to exchange at my gun club in Woodinville.
  9. pewpewpew

    5.56x45mm PPU M193, 5.56x45mm MAGTECH, 5.56x45mm American Eagle

      1. For Sale
    • Portland
    • Oregon
    Asking for $150 OR $75 (200rds) 5.56x45mm - 55 Grain FMJ BT - Prvi Partizan M193 Battle Pack $20 (50rds) 5.56x45MM 62 GR FMJ - MAGTECH 556B $60 (160rds) 5.56x45MM American Eagle 5.56x45mm 55 gr
  10. CoolBreeze808

    Aero Precision AR-15 Bolt Carrier Group 5.56x45mm NATO - Nickel Boron

      1. For Sale
    • $70
    • Portland
    • Oregon
    Had this spare laying around from a complete Aero I had. This has only a couple range trips on it, I’d say around 600 rounds before I got a BCM upper/bcg. Price is firm, not looking for trades at the moment. Meet by Mall 205 in Portland. Pay via cash, Zelle, PayPal, or CashApp. Thanks for...
  11. Richo877

    Done  5.56x45mm 62gr steel core m855 400rds $152 free shipping

    https://www.theamericanmarksman.com/stryker-556-m855-steel-core-62gr-fmj-400-ct.html
  12. Xmark1

    New 1,000 round case. Winchester 5.56x45mm NATO Ammunition 55 Grain M193 Full Metal Jacket

      1. For Sale
    • $399
    • West Linn
    • Oregon
    New unopened case. Price is Firm. FTF. NO shipping. No trades. I am located in West Linn. Picture of actual case for sale.
  13. M

    Silver bear .223 Remington 55g fmj

      1. For Sale
    • $180
    • Medford
    • Oregon
    Silver bear .223 Remington (5.56x45) 500 round sealed case 55g full metal jacket $180 No trades
  14. M

    Brown bear .223 Remington

      1. For Sale
    • $170
    • Medford
    • Oregon
    Brown bear 223 Remington (5.56x45) 62g HP 500 round sealed case $170 No trades
  15. R

    IMI M193 5.56X45mm NATO AMMO 55 GRAIN FMJ - 600 Rounds

      1. For Sale
    • $240
    • Salem
    • Oregon
    Hi I’m Selling 600 rounds of IMI 5.56x45 FMJ for $240. I have 1200 rounds available.
  16. s75n

    *SPF* 510 round IMI M193 5.56x45mm NATO Ammo 55 Grain Full Metal Jacket

      1. For Sale
    • $200
    • Portland
    • Oregon
    480 round $200 Meet near SE 33rd Powell Blvd
  17. T

    Geissele 14.5" AR-15 URG-I 5.56x45mm NATO Complete with Custom Geissele Trigger

      1. For Sale
    • $2000
    • Portland
    • Oregon
    Hello, I am selling one of my Geissele 14.5" AR-15 USASOC URG-I Upper Receiver Group Improved 5.56x45mm NATO Complete parts list: "Geissele" Daniel Defense cold hammer-forged barrel, 14.5-in., 1-7 twist, NATO chamber (released in 2020 Geissele MK16 Super Modular Rail, 13.5-in. DDC Geissele...

  18. Daniel Defense DDM4V7 5.56x45mm Nato Desert Sage

      1. For Sale
    • $2015
    • Bend
    • Oregon
    Daniel Defense DDM4V7 chambered in 5.56 Nato. Hard case, five 30rd mags, cleaning kit. Price is OBO
  19. Lasers

    IMI Razor Core 5.56x45mm NATO Ammo 77 Grain Sierra MatchKing Hollow Point - Price Drop

      1. For Sale
    • $120
    • HILLSBORO
    • Oregon
    Cheapest I can find online is 95 cents per round, selling these for 75 cents per round, $120 for 8 boxes
  20. D

    I inherited 5.56x45mm Battle Packs

    I have a few 5.56 battle packs came in an ammo can labeled 5.56 battle packs. Any suggestions on the possible manufacturer?
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