Built using our 18" 4150CMV barrels
produced in house, air gauged and bore scoped to ensure top
quality accuracy. This free float upper lends itself to an increase in
accuracy by not putting pressure on the barrel and the mid-length gas
system softens the recoil allowing faster follow up shots. Our uppers
are built from the ground up to be fast, accurate and reliable. Now
being offered as a complete package with bolt carrier group and charging
handle ready to pin to your lower and hit the range!
AR-15 Upper Receiver 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
4150CMV Stress Relieved 5.56 High End Barrel
1/9 Barrel Twist
Chambered in 5.56 NATO (will also fire .223 ammo)
18" Socom Profile barrel
.750" diameter at gas block
1/2x28 threaded muzzle/barrel
Low profile gas block
Barrel dimpled to secure gas block
Mid-Length gas system
A2 flash hider
Tactical Quad Rail free float 12" 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.