I am a member of perfectunion's forum group as well as several others. I have been looking for anything that would improve the accuracy of the Mini. I own several and the accuracy has been terrible. Recently, one of the vendors over at Perfect Union has begun marketing a barrel stabilizer that promises to make the Mini shoot a hell of a lot better than it currently does. I purchased several of these this last week and if anyone here is interested I would be happy to post before and after results as to what if any kind of improvement I see on a 180 and a 181 series mini. I can not explain exactly what this thing is supposed to do because I am not to up on harmonics but the price was right and again if you have an interest in knowing the results let me know. If you want to know more about what this thing is then go to Perfect Union or I think the web site is accustrut.com.