I am looking to pick up a 9mm conversion barrel for my M&P40. I know stormlake makes one, and it looks like it will do the job. My question is, has anyone ever used "gunbarrelstore.com" they look like they are selling the same conversion barrel on there for about $60 less than the manufacturer. Obviously I want to save money wherever I can to be able to afford more toys, but I want to use a trustworthy source. I know the manufacturer is pretty trustworthy, but if I have the change to save $60 so I can afford the 9mm mags then I am all for it. Just looking for a little feed back... Thanks