Well I got the 3fer deal from them, and I had em all put on Mauser receivers. With handloads, each of these 3 guns will hit 1 inch dots at 100 yds. while giving groups of about the size of a dime. Now, I am a shakey shooter, and I dont have the best technique I am sure, but I would have to say, they are fine barrels!
I was lucky enough to have one of the barrels fit a Vz24 receiver first time I spun it on. I did'nt think that gun would shoot well because I put it together, but it does shoot as well as the others.
Cheers!