AR-STONER AR-15 Optics Ready Upper Receiver Assembly 450 Bushmaster 16″ Barrel

Cartridge
450 Bushmaster
Color
Black
Finish
Black Parkerized
Material
Aluminum
Weight
4.45 Pound
Barrel Length
16 Inches
Twist
1:24 Inches
Threads
5/8″-32
Barrel Contour
Heavy
Sights
No
Barrel Finish
Phosphate
Chrome Lined
No
Gas Block Diameter
0.875 Inches
Gas System Length
Carbine
M4 Feed Ramps
Yes
Upper Receiver Type
A3 Flat-Top
Barrel Material
4140 Chrome Moly Steel
Handguard
2-Piece M4 Style
Bolt Carrier Assembly Included
Yes
Muzzle Device
A2 Flash Hider
Mil-Spec or Commercial
Mil-Spec
Country of Origin
United States of America
Compatible With
AR-15