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5.56 barrel

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. ORfisherguyx

    16" AR/M16 barrel

      1. For Sale
    • $150
    • Oregon City
    • Oregon
    Still sorting through years of accumulated parts.... This is a new, 16" government profile barrel, chrome-lined, 1/7 twist, feed-ramp cuts, a mid-length gas system, using a .750 gas block. It is completely unmarked, but I purchased it from Right To Bear several years ago, being billed as a...
  2. twinturbo

    7.5" 5.56 barrel - New in package

      1. For Sale
      2. For Trade
    • $40
    • Gresham
    • Oregon
    Ballistic advantage barrel $40 Trade for Non corrosive 7.62x39 ammo M16 stuff AK stuff ?
  3. MDDM

    17.7" 5.56 barrel - New

      1. For Sale
    • $80
    • Redmond
    • Oregon
    Good afternoon, I have a BA 17.7" barrel for sale. Local pickup in Redmond, OR. No shipping. $80 cash
  4. Kotto69

    Aero 16 inch 5.56 barrel 1:7 twist

      1. For Sale
    • $40
    • Sherwood
    • Oregon
    Government profile, unknown round count. I purchased the rifle used. It shot fine for what it is, but I swapped it out for an SPR barrel. This is an Aero 5.56 NATO 1:7 twist 16 inch factory takeoff barrel.
  5. outontherange

    A2 square forge upper with 7.5 5.56 barrel

      1. For Sale
    • $150
    • Portland
    • Oregon
    Upper is in great condition and has square forge. Ejection door comes with but needs pin. Needs forward assist.
  6. t.wrecks

    7.5" Stainless Steel 5.56 barrel

      1. For Sale
    • $40
    • St Helens
    • Oregon
    More parts bin stuff 7.5" SS 5.56, 1:9 barrel gas block, tube and blast can.
  7. diddy_oil

    Q Honey Badger 5.56 barrel and handguard

      1. For Sale
    • $650
    • Parkdale
    • Oregon
    Excellent condition 9.69” Q 5.56 Honey Badger barrel assembly 1:5 twist and 9” HB handguard without barrel nut or turn buckle. Both came off a 5.56 HB and has less than 100 rounds through it. The barrel also comes with the Q 2 piece flash hider with install/removal tool.
  8. Duneblaster

    Expo Arms Chrome Lined 13.9" 5.56 Barrel

      1. For Sale
      2. For Trade
    • $125
    • Roseburg
    • Oregon
    Expo Arms Chrome Lined 13.9" 5.56 Barrel These are $169.99 at Primary Arms. Installed once, unfired. Gas port is marked with a white colored pencil for aligning your gas block. Wipes off easily with a cloth and some oil. $125 shipped.
  9. tdemore1743x

    10.3 5.56 barrel

      1. For Sale
      2. For Trade
    • $50
    • Pendleton
    • Oregon
    Up for sale/trade is a 10.3in 5.56 AR barrel 1:7 twist rate Was gifted to me so unsure of round count and manufacturer $50 cash or trade for AR or G19/26 magazines In PDX 5/23-5/25
  10. jozguns

    Bear Creek Arsenal 16" 5.56 barrel

      1. For Sale
      2. For Trade
    • $45
    • Portland
    • Oregon
    For sale/trade I have a Bear Creek Arsenal 16" 5.56 barrel 1:7 twist mid length, new never fired or mounted. These are worth $60 new so I'll sell it for $45. I take cash, venmo, or trades. If you want any other parts for your build let me know. I have lots of other ads up for sale/trade–quite...
  11. tdemore1743x

    10.3in 5.56 barrel

      1. For Sale
      2. For Trade
    • $60
    • Hoquiam
    • Washington
    Was gifted to me but most likely will never be used. Unsure of brand and round count but the chamber, bore and feed ramps looks good and clean. 1:8 twist rate Let’s say 60 + shipping, or I’d trade for items listed below. Trades +/- cash: 2x body armor plates 2x G17, G19 or G26 magazines...
  12. B

    NEW - Stag Arms 5.56 Barrel (7.5in)

      1. For Sale
    • $60
    • Portland
    • Oregon
    NEW Never installed barrel. Still in its wrapping Stag Arms 7.5in barrel chambered in 5.56 - 7.5in - 1/7 twist - 4150 - Phosphate - Chrome lined - Pistol Length Decided to go a different direction with the build and don’t need this barrel. Purchased a few months ago from Stag. Thanks for...
  13. Duneblaster

    Aero 8" 5.56 Nitride 1:7 Barrel NEW Unfired

      1. For Sale
    • $80
    • Roseburg
    • Oregon
    Aero 8" 5.56 Nitride 1:7 Barrel NEW Unfired $80 shipped
  14. DameTime5

    SOLGW 18 5.56 Barrel

      1. For Sale
    • $150
    • Estacada
    • Oregon
    Brand new never fired. Bought a different one. Rifle length gas system. Meet in Sandy/Estacada. I’ll ship for $20.
  15. arakboss

    Done  LWRC 8.5" AR15 5.56 Barrel $120 shipped

    https://americanreloading.com/collections/all-products/products/lwrc-8-5-ar15-barrel?
  16. sterlingn

    Ballistics Advantage 14.7" 5.56 Barrel & Aero Adjustable Gas Block

      1. For Sale
    • $150
    • Gig Harbor
    • Washington
    Selling the following as a bundle: • Ballistics Advantage 14.7" 5.56 Pencil Profile Midlength Barrel, Modern Series • Aero Precision Adjustable Gas Block - .625 Low Profile I went in a different direction with repairing my existing (pre-House Bill 1240) upper. Both are unused and have never...
  17. ChrisWolf

    Proof Research, .223 Wyld 6mm ARC 6.5 Grendel 5.56 Barrel.

      1. For Sale
      2. For Trade
    • Hillsboro
    • Oregon
    FSOT 18” Proof Research barrel .223 Wylde. Used $500.00 16” Proof Research barrel 6mm ARC Lightly Used $700.00 18” Draco 6.5 Grendel Lightly used $525.00 with 7.62 bolt(for small frame AR Carriers) 16” LANTAC RAVEN Rifle length gas Unused $200.00 I will sell the entire DRACO upper 1250.00 Specs...
  18. TheDude1

    Stag Arms 7.5" 5.56 Barrel plus 7.3" handguard $77

    Aero Precision has a smoking deal on a blem Stag Arms. 7.5" 5.56 barrel and a Stag Arms blem handguard both for $77. Smoking deal if you are looking to build a pistol. Items are on Aero Precision's website.
  19. Screach

    Sig MCX BNIB Spear LT 5.56 and Virtus 5.56 Barrel

      1. For Sale
    • $500
    • Beaverton
    • Oregon
    Hey all, up for sale today I have two MCX barrels. First, I have a used 16” Virtus Barrel purchased for my Spear LT. The barrel has approx 150rds down the pipe and is in excellent condition. Muzzle device has been removed and a taper adapter will be included. Virtus 16” 5.56 Barrel Asking $500...
  20. G

    16" .223 wilde BARREL

      1. For Sale
    • $60
    • Springfield
    • Oregon
    Faxon 8.5" 9x19 BARREL WITH FLASH HIDER $60.00 16" .223 WYLDE, LIGHT WEIGHT, MIDLENGTH GAS, .750 GAS BLOCK $60.00 AR9 BOLT GROUP $50.00 AVAILABLE FOR LOCAL PICKUP PLEASE DM FOR COMS
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