Quality AR 15 uppers, AR15 parts, AR-15 rifle manufacturer. Friday Harbor, WA
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7.5" 5.56mm Tactical Quad Rail Upper
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Your Price $259.99
Our 7.5" AR15 upper make a fantastic pistol build or a great addition to a SBR lower for the ultimate PDW build. Machined from 4150CMV Mil-B steel then treated with a Melonite / QPQ finish for reliability and accuracy that will last for years. Tuned for reliability and backed by a full warranty from us you can buy with confidence that your pistol build will rock!

AR-15 Upper Assembly:
  • Hardened Arms M4 Feed Ramp Flat Top Receiver
  • Black anodized mil-spec finished upper receiver
  • Feed ramps for increased feeding reliability on barrel and upper
  • Laser etched T-Marked upper receiver
  • 5.56 4150CMV Mil-B Steel Barrel
  • Chambered in 5.56 NATO (will also fire .223 ammo)
  • 7.5" Socom barrel with M4 Extension
  • .750" diameter at gas block
  • 1/2x28 threaded muzzle/barrel
  • Low profile gas block
  • Barrel dimpled to secure gas block
  • Pistol length gas system
  • A2 flash hider
  • Tactical Quad Rail free float 7" hand guard without end cap

Fits any mil-spec AR15 lower receiver.

Hardened Arms uppers are high end, accurate, head spaced, inspected and test fired prior to shipping. They are built using stringent specs, top quality parts and procedures to ensure maximum reliability and performance.

You are responsible for knowing your state laws regarding barrel lengths, pistol, Short barreled rife restrictions. 20% restocking fees if you can not take delivery due to state restriction. Dealer programs are available on our website. Two year warranty against manufacturer defects. Finishes will wear with use, no warranties apply to finish wear.
515 Tucker Ave, Friday Harbor, WA 98250 | sales@hardenedarms.com
Phone: 425-530-0837