Quality AR 15 uppers, AR15 parts, AR-15 rifle manufacturer. Friday Harbor, WA
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AR15 Rifle - 16" FDE 5.56 M4 1/9 SDX Rifle
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Your Price $999.99
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Built using our 5.56mm carbine length gas system 4150CMV barrel, a key-mod SDX slim hand guard, the reliability and accuracy only Hardened Arms can deliver in a hard to see but impossible to ignore package!

Dealer Pricing Available

AR-15 Upper Receiver Assembly:

    Hardened Arms M4 Feed Ramp Flat Top Receiver
    Hardened Arms Camo Cerakoted mil-spec finished upper receiver
    Feed ramps for increased feeding reliability on barrel and upper
    Melonited 4150CMV 5.56 High End Barrel
    Black Melonite Finish
    1/9 Barrel Twist
    Chambered in 5.56 NATO (will also fire .223 ammo)
    16" M4 Profile barrel with M4 Extension
    .750" 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
    Free floated 10" SDX FDE cerakoted rail


Hardened Arms Complete Lower:

    Mil-Spec 7075 Forged Lower
    Hardened Arms Camo Cerakoted
    Collapsible buttock
    Mil-Spec Dimensions
    Mil-Spec Metal Parts Kit Installed
    Works with all standard AR15 magazines (Does not come with Magazine)


Hardened Arms rifles 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, and rifles. 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.

Rifles must ship to FFL in your state, and may take up to two weeks for delivery. Magazine shown is not included with purchase.
515 Tucker Ave, Friday Harbor, WA 98250 | sales@hardenedarms.com
Phone: 425-530-0837