i second it,
Lou, @ business end customs,he's in peabody ma.
he did a preban ar15 for me last year,he did a great job!
i have before and after pics if you want to see it,
i would definitely use him again,great guy to deal with,fast turn around time,and he enjoys...
buy yourself a preban,you can have anything on them u want,you wont be limited to a pined stock or a welded muzzle brake,
you can find them on the classified section of this site,some real nice rifles out there,most with low round count,take your time,
buy a preban!
just my opinion...