An 8.5" 300 Blackout upper featuring Hardened Arm's New Talon 7" free float hand guard. A strong but light weight 6061-T6 hand guard with a continuous top rail and dual lock up feature.
AR15 5.56mm Pistol Upper Receiver Assembly:
Hardened Arms M4 Feed Ramp Flat Top Receiver
Forged 7075 aluminum upper receiver
Feed ramps for increased feeding reliability on barrel and upper
4140CMV Melonited High End Barrel
Chambered in 300 Blackout
8.5" M4 Profile barrel with M4 Extension
1/8 Barrel Twist
.750" diameter at gas block
5/8x24 threaded muzzle/barrel
Low profile gas block
Barrel dimpled to secure gas block
Pistol length gas system
A2 flash hider
Talon Rail free float 7" Hand guard
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. 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.