Quality AR 15 uppers, AR15 parts, AR-15 rifle manufacturer. Friday Harbor, WA
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10.5" 5.56 SDX Mk II Rail Upper
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Original Price $349.99
Your Price $169.99
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Bring your best game to the range with an upper that stands out from the rest. Built with a premium Hardened Arms 4150CMV Melonited Air Gauged barrel and finished off with a 10" SDX Mark II Slim Line MLok Rail free float rail. Utilizing the best in parts and in house manufacturing you wont be disappointed.

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 CMV Melonited 5.56mm Barrel
    Air-Gauged, Inspected and headspaced
    Chambered in 5.56mm (Will also shoot .223)
    10.5" Socom barrel with M4 Extension
    .750" barrel diameter at gas block
    1/2x28 threaded muzzle/barrel
    Low profile gas block
    Barrel dimpled to secure gas block
    Carbine-Length gas system
    A2 flash hider
    10" SDX Mk II Slim Line M-Lok Rail (1.46" Cross Section, 1.3" Inner Diameter)

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, pistols and short barreled rifle restrictions. A 20% restocking fee will apply if you cancel anytime after ordering or 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