Discovered today that my MP5 barrel has a bulge in it (can feel it on the outside and see it on the inside). IGF did the original work to the gun (was a 94), but I'm not too excited about trusting UPS with it. Any recommendations on someone in Colorado that can do this? Or instructions I can give to a competent gunsmith a press to do it? Recommendations on where to get another barrel? (want a 3 lug). Thanks.