Feed ramps for increased feeding reliability on barrel and upper
Laser etched T-Marked upper receiver
Chrome Moly 4150- 5.56 High End Barrel
Black Melonited Finish
Chambered in 5.56 NATO (will also fire .223 ammo)
10.5 556 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
LumaShark(TM) hand guard, muzzle device shown not included (Crucible LMC available for purchase)
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. No waiting weeks for parts to come in or uppers to be built to, our website shows real time inventory of what is ready to go out the door to you immediately!
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.