BARREL LENGTH: 10.5?
CALIBER: 5.56 NATO
TWIST RATE: 1:7
PROFILE/CONTOUR: M4 Medium
MATERIAL: 4150 Chrome Moly Vanadium
FINISH: Parkerized
GAS SYS: Carbine
DIAMETER AT GAS PORT: .750?
MUZZLE THREAD: 1/2-28
INCLUDES: A2 Front Sight Base With Sling Swivel, A2 M4 Notched Hand Guard Cap, & A2 Barrel Nut
TREATMENT: Non RF85
ADDITIONAL SPECS/NOTES: Barrel is compatible with .223 Ammunition.