Ottocomp is in Afton Missouri just outside of St Louis. He is at 9401 lavern place. His # is 314-638-3327 His full name is Otto Matyska. A word of advice do not call him on Sunday! He is quite abrupt sometimes but is a fabulous gunsmith. He has worked on a few different things for me and all the work was stellar. He seems to be very honest and straightforward and i would recommend him to any serious shooter for competent work.