I have Brux, Bartlein, PacNor, and Lilja and all have been screwed on right and shoot. I like to just buy from Bugholes since they have a pretty good selection in stock and I hate waiting. If I want a contour Bugholes doesn't carry I will order it from one of the manufacturers direct. I just ordered a barrel from Lilja less then 2 weeks ago, Melanie just called and told me it was done and she was shipping it today. Wasn't expecting that quick of a turnaround but I will definitely take it.
