Just purchased a 30SF and have not had a chance to shoot her yet. It appears to be unfired and I am looking forward to using it for submajor and subcompact. After purchasing the gun I became aware of some problems with the guns, espcially those with serial numbers starting with M. I went to check and sure enough my gun's number starts with MPU. I did a search and read a lot of horror stories and available fixes. It seems that if there is a problem, that a lot of shooting or replacing the trigger bar will alleviate the problem. I am writing here to see if any GSSF folks have experienced the problems with this gun. I plan to shoot her tomorrow and will check back in with an up-date after the range time. Any and all suggestions appreciated.