Probably more on the aesthetics thing.I am sure it will behave the same way as the plastic one; press the trigger tension and mess up with the cocking mechanism if you tighten it too much.I must admit, it is a good-looking aftermarket part and I am tempted to get one too.I am also a big fan of MAP parts, and the owner, Mr. Bill, is an upstanding gent in my book.
MAP Parts? do you have a link?pv
Thanks Guys!pv