got nothing inside your AO that I've used personally. thought I'm sure there are a couple of competent individuals at the Mill in Littleton.
for those that click this link and are thinking something similar, this is outside of OP's search area but, if looking in Hampden County, MA; I would recommend @Paper City Firearms . Have been pleased with their work personally on what Ive had done, and the other examples Marshall had were all done very well too.