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556 223

The SR-556 is a semi-automatic AR-15 style rifle manufactured by Sturm, Ruger & Co. The rifle was introduced in 2009 in .223 Remington/5.56×45mm NATO and as a .308 Winchester AR-10 variant in 2013, the SR-762. It is one of several AR-15 rifles to use a gas piston operation.

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Recent contents
  1. D

    ETS 9mm and Pmag

      1. For Sale
      2. For Trade
    • $35
    • Boise
    • Idaho
    ETS 9mm 32 rd, ETS g43 12 rd, Pmag m3. All mags have around 2-3 uses. Pmag has rhino liner on bottom half. $35 shipped paypal or venmo. May discount or trade for 20 rd colt/ surefeed/ okay/ nhmtg magazines or 25 rd colt/ metalform/ uzi 9mm mags.
  2. M

    14.5 ORW15 w/ Geissele Handguard and HUXWRX Flash Hider

      1. For Sale
    • $1500
    • Wilsonville
    • Oregon
    14.5" ORW15 w/ Geissele MK16 Handguard and HUXWRX Flash Hider. Pinned Gas Block. Nitride Carrier, 416 R Stainless 223 Wylde 1:7 Twist Barrel. Has BCM Stock and Pistol Grip. ALG ACT Trigger. Radian Billet Charging Handle. About 1000 Rounds used. Rifle is sub-moa with match ammo consistently.
  3. M

    14.5 Complete Upper Build

      1. For Sale
    • $1300
    • Wilsonville
    • Oregon
    14.5" Complete Upper. Geissele 13.5" NSN MK16 Rail. Match Grade Douglas Barrel. 416R, 223 Wylde, 1:7 Twist, Billet Upper that matches Geissele Rails. HUXWRX Flash Hider. Pinned Gas Block. ~1000 Rounds used. Is SUB MOA with match ammo. Nitride BCG and Radian Billet CH
  4. Jadeon

    FNH SCAR 16 fde rifle, Belgium Production

      1. For Sale
    • $3500
    • Yamhill
    • Oregon
    Hello, What's included; •Sought after Belgium production Scar 16 fde, RCH 5.56 •Geissele Super Scar trigger, with original FN trigger & hammer. •Kinetic Development Group (KDG) fde 6" extended hand guard. •KDG rear QD mount •Magpul fde AFG •x10 FN magazines (x4 30rd black mags/ x2 30rd fde...
  5. WIN308

    Brand new: Christensen Arms CA5Five6 (Carbon Fiber)

      1. For Sale
      2. For Trade
    • $1250
    • Hillsboro
    • Oregon
    Howdy folks, I have a brand new in the box Christensen Arms CA5Five6 in 223WYLD (it takes 5.56 and 223 ammo). It has a Carbon fiber barrel and handguard inserts. It weighs in at (6.3 pounds). Great for competitions, and precision shooting. Plus, come'on it looks really cool. I'm looking to...
  6. Jadeon

    FNH SCAR 16 fde rifle, Belgium Production

      1. For Sale
    • $3500
    • Yamhill
    • Oregon
    Hello, What's included; •Sought after Belgium production Scar 16 fde, RCH 5.56 •Geissele Super Scar trigger, with original FN trigger & hammer. •Kinetic Development Group (KDG) fde 6" extended hand guard. •KDG rear QD mount •Magpul fde AFG •x10 FN magazines (x4 30rd black/ x4 10rd/ x2 30rd fde...
  7. Jadeon

    FNH SCAR 16 fde rifle, Belgium Production

      1. For Sale
    • $3600
    • Yamhill
    • Oregon
    Hello, What’s included; •Sought after Belgium production Scar 16 fde, RCH 5.56 •Geissele Super Scar trigger, with original FN trigger & hammer. •Kinetic Development Group (KDG) fde 6" extended hand guard. •KDG rear QD mount •Magpul fde AFG •x10 FN magazines (x4 30rd black/ x4 10rd/ x2 30rd fde...
  8. D

    Incomplete AR15 (Delton/Aero/PSA) $260

      1. For Sale
    • $260
    • Sandy
    • Oregon
    Had some extra parts laying around and don't have room in the safe to keep it. Only needs a rail, charging handle and stock to be completed. 16” 5.56 barrel Anderson no-logo lower (new) PSA lower parts kit (new) Aero Precision upper (new) Delton BCG (used) Delton Barrel (used) Yankee Hill...
  9. N

    Palmetto State Armory 10.5" 5.56 complete upper with upgrades

      1. For Sale
    • $350
    • Salem
    • Oregon
    Complete PSA 10.5" 556/223 upper with PSA BCG Radian raptor charging handle (black) Kaw valley precision linear comp (FDE) Magpul MOE carbine handguard (FDE) Magpul mbus rear sight (FDE). Upper is brand new and unfired.
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