AR15 5" 300 BLK Upper Receiver 300 Blackout AR15-Upper AR15-Upper-Receiver

Specs
Barrel Length:    5"
Caliber:    300 AAC BLK
Muzzle Thread:    5/8x24
Barrel Coating:    Black Nitride
Muzzle Device:    A2 Flash Hider
Bolt Carrier Group    AR 15 Bolt Carrier Group- Black Nitride
Handguard Type:    4" M-LOK Super Slim Light Free Float Handguard
Receiver Material:    Forged 7075 T6 Aluminum
Charging Handle:    Standard Mil-Spec Charging Handle

Assembly Includes:
AR-15 Stripped Upper Receiver
AR-15 Forward Assist - Black
AR15 Dust Cover Complete Assembly
AR-15 .750 Low Profile Steel Gas Block with Roll pins & Wrench 
AR Micro Gas Tube
AR-10 A2 Muzzle Brake 5/8x24 Pitch
Steel Crush Washer
300 Blackout AAC 5" Pistol Length Barrel 1:7 Twist Nitride (Made in USA)
AR-15 M-LOK 4" Super Slim Free Float Handguard
AR-15 Bolt Carrier Group Assembly - Black Nitride (Made in USA)
Milspec Charging Handle