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556 barrel

The SR-556 / AR-556 is an AR-15 style semi-automatic rifle manufactured by U.S. firearms company Sturm, Ruger & Co. The rifle was introduced in 2009 in .223/5.56NATO and as a .308 AR-10 variant in 2013, the Ruger SR-762. It is one of several 21st-century AR-15 rifles to use gas piston operation (SR-556). In January 2016 Ruger discontinued all SR-556 rifles and introduced a new takedown variant with a lightweight KeyMod handguard.

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Recent contents
  1. M

    WTB 12.5 556 BARREL

      1. Want to Buy
    • Salem
    • Oregon
    Looking for a Daniel defense or bcm barrel. I want both chrome lining and cold hammer forged that's why I'm specifically looking for these to brands Questions in comments Pm for offers Prefer to meet in salem.
  2. M

    11.5" Ballistic Advantage Modern Series 556 Barrel BNIB

      1. For Sale
    • $120
    • Clackamas
    • Oregon
    I purchased this and ended up going a different route for my pistol build. It's still brand new and in the wrapping. I can take additional photos if needed. Looking for $120 cash face to face. Might be open to trades. Let me know what you've got!
  3. Sasquatch702

    Adams Arms 7.5” 5.56 PDW Tactical Elite Piston Pistol Upper

      1. For Sale
    • $550
    • Vancouver
    • Washington
    Pistol Length Gas Piston System Factory Pinned by Adams Arms with Lifetime Warranty 7.5" Heavy Contoured Melonited Barrel 1:7 Right Handed Twist M4 Feed Ramps Chambered in 5.56 NATO 7" Evolution Rail 4-EX A2 Flash Hider Adjustable gas block
  4. F

    New in box Rosco 10.5 556 Barrel

      1. For Sale
    • $100
    • Aloha
    • Oregon
    Brand new in box. 1/7 twist barrel. Message with any questions. Cash only please.
  5. supersixone

    DRD price drop!! Tactical Aptus 556 take down to rifle. New w case

      1. For Sale
      2. For Trade
    • $1800
    • Lacey
    • Washington
    I have a new Drd aptus in black. 556. Mlok rails acr style folding stock . Comes with back pack case . Can put the rifle together in less than 60 seconds. Left side non reciprocating charging handle flip out like fal l1a1 charging handle. Comes with extra optional tool and storage cap to...
  6. OregonSig

    Ruger American Ranch 5.56 W/ LPVO and mount SPF

      1. For Sale
    • $750
    • Eugene
    • Oregon
    Selling a super fun bolt action Ruger American, this is the ranch model which has a 16" 1/8 twist barrel chambered in 556!! 223 of course works fine too. Another unique feature is that this guns accepts AR magazines. Yes, you can put a 50 round drum mag onto your bolt action rifle and blast...
  7. Angler-Saxon

    PSA AR-15 18" RIFLE LENGTH .223 WYLDE PREMIUM BARREL - TRADE FOR BCG

      1. For Sale
      2. For Trade
    • $115
    • La Center
    • Washington
    Brand new PSA AR-15 18" RIFLE LENGTH .223 WYLDE 1:7 STAINLESS STEEL BARREL. Trades: BCG Glock 42, 43, 19, 26, or conversion barrel (threaded only) Sig P365 Threaded barrel AR15 barrel 14.5" or shorter AR15 Upper Receivers AR15 Rails Gold/Silver Glock slides (plus cash on my side) Optics/Red...
  8. jabayevx

    Daniel Defense MK 18 Upper Receiver

      1. For Sale
      2. For Trade
    • $799
    • Beaverton
    • Oregon
    Used DD MK18 Upper receiver with Tango Down surefire grip and SiCo ASR flash hider. Charging Handle and BCG not included.
  9. dsteve

    Arak-21 556/300BLK

      1. For Sale
    • $1500
    • Washougal
    • Washington
    I have for sale and a r a k - 21 chambered in 556 and includes a 300 blackout barrel quick interchangeable, sand tan lower with upgraded elf trigger magpul furniture, vortex 2 optic red dot. Includes three AR mags, 300 rounds of 300 blackout, $1,500 firm
  10. RobMa

    Brand new Colt socom barrel 14.5"

      1. For Sale
    • $350
    • Seattle
    • Washington
    Brand new Colt 14.5" Socom barrel. 556 NATO 1/7 twist heavy phosphate Chrome lined New in box, only removed to take pictures. All NFA rules apply of course. I take PayPal friends and family Shipping OK, no tax and Free shipping No separate parts purchase requests please. No trade requests...
  11. Micah-H

    Surplus 556 barrel

      1. For Sale
      2. For Trade
    • $40
    • LaCenter
    • Washington
    Looking to sell a used 556 16in barrel. I bought it last year for a ar I never got around to building. Asking $60 obo willing to trade for m1 carbine ammo or reloading supplies.
  12. daniel1996

    Kac Ras FF Long handguard & 18" 556 barrel

      1. Want to Buy
      2. Want to Trade For
    • tacoma
    • Washington
    Have trades ranging from rifle/pistol ammo to pcc's (stribog) or can cash out. Message me at 253 448 50three5
  13. SD Luna

    11.5 Pistol

      1. For Sale
      2. For Trade
    • $2300
    • Seattle
    • Washington
    BCM Receiver, MCMR10, BA 11.5 Hanson profile barrel, Toolcraft BCG, T1 on Scalarworks 1.93, M300 with CD LCS, Aero M4E1, ALG ACT Trigger, Anti-Rotation pins, Talon safety, Law Folder Gen 3, SBA3, Slingster. Zero rounds on barrel and less than 50 on BCG. Asking $2300 shipped to FFL. Willing to...
  14. shoGUNSLINGR

    20" AR Barrel with FSB (556/223/etc)

      1. Want to Buy
      2. Want to Trade For
    • Eugene
    • Oregon
    HBAR preferred. Please PM details. Cash or trade other AR parts, maybe ammo, for the right deal. Much obliged.
  15. Major Payne

    5.56 Anderson complete upper

      1. For Sale
      2. For Trade
    • Vancouver
    • Washington
    Up for sale is a lightly used complete Anderson upper off a factory rifle ~1k rounds fired 16” barrel 1:9 twist BCG Charging handle Magpul handguard & vertical grip Have a carry handle and sling if the buyer wants $550 cash/possible trade
  16. acp

    Psa nitrite m4 upper/ aero lower

      1. For Sale
    • $650
    • Tangent
    • Oregon
    30 rounds fired total , zeroed at 50 yards. Mpi marked bcg Magpul Moe fde furniture with houge grip.sti quick adjust two point sling. Aero lower aero parts kit. The trigger breaks like glass,very nice trigger. Ftf in the Albany Corvallis or Lebanon I'm keeping the single chamber brake I'll be...
  17. Gambeeno

    Bundle Package 6.5 Creedmoor, 556

      1. For Sale
      2. For Trade
    • $3800
    • Castle Rock
    • Washington
    6.5 creedmore bolt action Savage Stealth 2.5lb trigger, Magpul PRS Stock, Vortex Gen 3 556/223 AR-15 20” rifle Areo Precision Upper and lower, Magpul Rear Rubberized Pistol grip, Magpul UBG 2 7point Adjustable Stock, Magpul M-Bus Flip up sight rear, Magpul RVG vertical hand grip, 6-9inch...
  18. T22

    PRICE DROP Bushmaster ACR - 5.56 and 300 Blackout barrels

      1. For Sale
    • $3200
    • Sherwood
    • Oregon
    Up for sale is a basically new Bushmaster ACR. MLOK rail with 16 inch barrels, 300 BLK has the AAC 51T, 5.56 came without a muzzle device and I never installed one. Ambi charging handle, JPE reduced power trigger springs, custom Radian Talon 45° safety. All original parts, Magpul 300BLK PMAG...
  19. outontherange

    AR pistol barrel 7.5”

      1. For Sale
    • $75
    • Vancouver
    • Washington
    PSA pistol barrel. $75. Stainless steel. Brand new. Everything lines up exactly.
  20. Art_Vandelay

    20" HBAR AR-15 Rifle

      1. For Sale
    • $500
    • Oregon City
    • Oregon
    Selling my DMR-style AR-15 build. Fired one mag through it to check function. Upper - Anderson 20" HBAR - 5.56mm / 1:9 twist (SKU - B2-K611-AH00) Lower - PA-15. Can swap it with a completed Anderson lower to match upper if you'd like. BCG - PSA Stock - Magpul MOE Rifle Charging Handle -...
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