This is the factory Glock .40 barrel that comes stock in the Glock model 22C. It can also be used to convert the 31C to shoot .40 s&w. It cannot be used as a compensated barrel in the 31 or 22 due to the lack of ports in the side. Using it to convert the 17C to shoot .40 s&w is not safe as it will not fit into the slide properly. Calibers can only be converted down, not up. This barrel will not work extended in the 23C or 32C due to the difference in the locking blocks.
Caliber: .40 s&w
Height: 1.26 inches
Length: 4.49 inches
Rifling: right hand, hexagonal
Length of Twist: 9.84 inches
Travels at: ~ 985 feet per second
Using reloaded or lead ammunition in Glock barrels is NOT recommended!