This Upper Features:
UPPER MADE IN THE USA
SPECS ARE:
Length: 7.5
Twist: 1:7
Profile: CONTOUR
Gas System: PISTOL
Gas block diameter:.750
Chamber: 556/223
Finish: NITRIDE
Upper Receiver 7075
STEEL Gas Block .750
Flash hider : A2 1/2 X 28
7" M-lock FREE FLOAT HANDGUARD
DOES NOT INCLUDE BOLT CARRIER GROUP OR CHARGING HANDLE