AR-STONER AR-15 A3 Upper Receiver Assembly 12.7x42mm 16″ Barrel with 15″ M-Lok Handguard

Cartridge
12.7x42mm
Finish
Black Parkerized
Material
Aluminum
Weight
4.8 Pound
Barrel Length
16 Inches
Twist
1:20 Inches
Threads
49/64″-20
Barrel Contour
Heavy
Sights
No
Barrel Finish
Black Parkerized
Chrome Lined
No
Gas Block Diameter
0.936 Inches
Gas System Length
Carbine
M4 Feed Ramps
No
Upper Receiver Type
A3 Flat-Top
Barrel Material
4150 Chrome Moly Vanadium Steel
Handguard
Free Float M-Lok Handguard
Bolt Carrier Assembly Included
Yes
Muzzle Device
LS2 Spiral Flash Hider
Mil-Spec or Commercial
Mil-Spec
Country of Origin
United States of America
Compatible With
AR-15