Walther P22 target barrel?

[wobblinwheel]

A friend gave me a P22 pistol not long ago. I have seen on the internet that they make a longer (5") barrel kit for it that interchanges "in minutes". I downloaded the owners manual, and they refer to this kit. Looks pretty COOL on there! Has a "stabilizer" with the kit that adds weight to end of the muzzle. Have any of you guys purchased and used this kit, and if so, where did you get it? And of course, what did it cost you?