300 blackout 16" rifle upper with a pistol length gas system for
all your ammo weight needs. Capable of accurate long range hog hunts in
the flat lands of Texas with super sonics to clearing a house with 220gr
subs. A 10" quad rail helps keep the weight down and provides for
mounting options for bipods, lasers and even night vision scopes.
AR15 300blk Rifle 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
4150 Chrome Moly Steel .300 Blackout Barrel
Chambered in .300 Blackout
.093" gas port hole (allows better cycling of subsonic ammunition)
16" HBAR Profile barrel with M4 Extension
1/8 Barrel twist
.750" barrel diameter at gas block
5/8x24 threaded muzzle/barrel
Low profile gas block
Barrel dimpled to secure gas block
Pistol length gas system (allows better cycling of subsonic ammunition)
A2 flash hider
Tactical 10" free float quad rail
Fits any mil-spec AR15 lower receiver.
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
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 anytime after ordering or 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.