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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. 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...
  2. 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...
  3. 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.
  4. 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...
  5. 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
  6. Asavage270

    Wanted - 20" CHF chrome lined 5.56 barrel or complete upper

      1. Want to Buy
      2. Want to Trade For
    • Eugene
    • Oregon
    Looking for a 20" AR barrel. Cold hammer forged, heavy profile, chrome lined are the only 3 requirements. Used it okay so long as its not entirely shot out. Also open to a complete upper with the aforementioned barrel. Thanks!
  7. officially5150

    12inch 5.56 barrel trade for 300 blackout barrel

      1. For Trade
    • SALEM
    • Oregon
    Looking to trade my 5.56 1 in 7 ar barrel with clean rifling (unknown round count) for a 300 blackout 7.5 or 10.5 inch barrel
  8. Kotto69

    CBC 16” 5.56 barrel with TacFire Linear Comp, 3 USGI 20 round Colt magazines, gas tube, & a 50 round unopened box of SP ammo

      1. For Sale
    • $200
    • Sherwood
    • Oregon
    I bought this barrel to replace an M4 contoured barrel with FSB. I installed it on my upper with a TacFire linear compensator but have not shot it yet. I’d like to bundle this barrel and comp with 3 USGI 20 round Colt AR15 magazines I have. I’ll also include the mid-length gas tube that goes...
  9. D

    Ballistic Advantage 16” 5.56 barrel with gas block and tube

      1. For Sale
    • $75
    • Molalla/Canby
    • Oregon
    Take off from a rifle rifle that the owner wanted an 18” gun. No round count but knowing the original owner like I do it’s not much. $75 for everything
  10. Violet_GT

    AR-15 24" Stainless Steel Heavy Bull Barrel

      1. For Sale
    • $150
    • Tualatin
    • Oregon
    I have a Stag Arms "Stag 15" 24" bull barrel I'm looking to sell. Fired 150 hornady rounds through it, all cold and slowly fired. Its a precision barrel after all. In great condition and still good for a life time of use. Looking to just get rid of it and the firmly listed price reflects that.
  11. cooperdh

    PENDING SALE-Wilson Combat Match Grade 16" 5.56 Mid Length Barrel

      1. For Sale
    • $100
    • Gresham
    • Oregon
    Gently used 1:8 twist barrel, maybe 200 rounds through it. This barrel is super accurate and shoots sub MOA. https://palmettostatearmory.com/wilson-combat-5-56-16-match-grade-6-groove-barrel-matte-bead-blasted-stainless-tr-556ramg16rt8.html
  12. cooperdh

    BNIB Noveske 16" Recon 5.56 barrel

      1. For Sale
    • $420
    • Gresham
    • Oregon
    I bought this barrel for a build I had planned but plans changed. You will get a brand new barrel at a lower price than retail and no shipping charges. Local sales only and no trades...
  13. Robert96

    10.5in 5.56 Rosco blood line barrel.

      1. For Trade
    • $75
    • Salem
    • Oregon
    Rosco Blood line 10.5in 5.56 barrel might be 100 round out of it before moving to 300blk. $75 cash or $90 trade. Trade interests are: 308, 300blk, and 9mm ammo, Magpul D-60 5.56 Drums, holosuns micro red dots, primary arms micro prisms, maybe a Bushnell dusk to dawn scope, compact weapon...
  14. dbg19

    11.3" 5.56 Barrel + Gas Block + Gas Tube

      1. For Sale
    • $100
    • Gresham
    • Oregon
    Ballistic Advantage Barrel 11.3" 5.56 Barrel. Lightweight. Hanson Profile. NiB Feed Ramp. Ballistic Advantage Gas Block low profile .625, pinned Ballistic Advantage Gas Tube carbine, melonite finish Round Count: About 50 rounds through it. Bought this as an extra. Info from Factory...
  15. dasher635

    16" 5.56 Barrel

      1. For Trade
    • $75
    • Kent
    • Washington
    I have a 16" 5.56 1/7 barrel that I removed from a PSA upper. Would like to trade for 20" 5.56 barrel. My barrel has about 200 rounds thru it. Willing to add cash to make the deal
  16. Vierings

    10.5" Aero Precision 5.56 barrel, gas tube, gas block, a2 birdcage

      1. For Sale
      2. For Trade
    • $100
    • Tacoma
    • Washington
    Pulled the 10.5 barrel in favor of an 18. Don't need this sitting around $100 for everything. Face to face preferred. But willing to ship on your dime. Not too interested in trades, but will hear you out
  17. J

    Aero Precision M4E1 Enhanced 10.5" 5.56 Barrel Complete Upper Receiver

      1. For Sale
    • $325
    • Lynnwood
    • Washington
    I have an Aero Precision M4E1 Enhanced 10.5" 5.56 Barrel Complete Upper Receiver for sale. (No trades at this time. Thanks.) It has less than 30 rds through it. (Thought this would work for my wife but it turned out to be too heavy for her.) It comes in the original box and is in perfect...
  18. huntpotter

    AR 5.56 Barrel / Mlok Handguard / Bolt Carrier Group Charging Handle

      1. For Sale
    • $80
    • Vancouver Ridgefield
    • Washington
    Up for sale. SW WA. Vancouver area. Clark County area. AR Parts. Individual, or as a package deal. PSA 5.56 barrel. 16”, midlength, nitride. Dimpled gas block spot. New, unfired. $80 cash. Battle Arms Development 13” Mlok handguard. As new. With barrel nut and hardware. Includes a new Magpul...
  19. GlockShooter

    Rosco 10.5inch 5.56 barrel

      1. For Sale
      2. For Trade
    • $90
    • Salem
    • Oregon
    300 rounds of usage Also have a sons of liberty low pro gas block. .750 With carbine length gas tube $125.00 if purchased all together
  20. officially5150

    White oak armory 26 inch 5.56 barrel (ar15) with surefire procomp, gas block and tube

      1. For Sale
    • $200
    • SALEM
    • Oregon
    Purchased a 26 inch white oak armory 5.56 1.7 heavy barrel today and then remembered I don't shoot long range. Got it on a whim but really have zero use for it. Comes with a Midwest industries .936 gas block 0 rnds fired White oak armory rifle +2 gas tube (ordered today) Surefire procomp muzzle...
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