AR-STONER LR-308 A3 Billet Upper Receiver Assembly 308 Winchester 18″ Barrel with 15″ M-Lok Handguard

Cartridge
308 Winchester
Finish
Matte
Material
Aluminum
Barrel Length
18 Inches
Twist
1:10 Inches
Threads
5/8″-24
Barrel Contour
Heavy
Sights
No
Barrel Finish
Matte
Chrome Lined
No
Gas Block Diameter
0.875 Inches
Gas System Length
Rifle
M4 Feed Ramps
Yes
Upper Receiver Type
A3 Flat-Top
Barrel Material
4150 Chrome Moly Vanadium Steel
Handguard
15″ M-Lok
Bolt Carrier Assembly Included
Yes
Muzzle Device
Flash Hider
Mil-Spec or Commercial
Commercial
Country of Origin
United States of America
Compatible With
AR-10, LR-308