Our 7.5" AR15 uppers 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 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 and short barreled rifle restrictions. A 20% restocking fee will apply if you cancel any time after you order or 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.