Quality AR 15 uppers, AR15 parts, AR-15 rifle manufacturer. Friday Harbor, WA
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20" 5.56 Hbar 1/7 Upper w/ 12" Scorpion (Quick Ship)
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Your Price $549.99
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Looking to improve your range trips? Want the absolute most rigid and harmonically resistant barrel? A bull barrel delivers superb accuracy by increasing rigidity, decreasing harmonics and dramatically reducing felt recoil. These barrels are made in house on our state of the art CNC equipment, using only the highest quality chrome moly vanadium steel. Stress relieved and air gauged and turned on centers delivers phenomenal accuracy when paired with match ammo. Upper comes with a thread protector, optional muzzle brake available or add your own 1/2-28 threaded muzzle device later. 

AR15 Upper Specifications:
    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
    4150 Chrome Moly Vanadium Steel 5.56mm Barrel
    Air-Gauged, Inspected and head-spaced
    Bull Barrel Profile
    Chambered in 5.56mm (Will also shoot .223)
    20" HBar barrel with M4 Extension
    1/7 Barrel twist
    .936" barrel diameter at gas block
    1/2x28 threaded muzzle/barrel
    Low profile gas block
    Barrel dimpled to secure gas block
    Rifle-Length gas system
    QPQ thread protector
    12" Scorpion Rail

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