I have not done biz with SSS, but I did look up BBB.
Sharp Shooters Supply Business Review in Delphos, OH - Lima Ohio BBB
If that guy only has 8 complaints over the years of all that biz in gunsmithing, he is doing well.
One thing I CAN tell you is that the old guy is sharp [pun intended].
I read this
Savage Shooters - Understanding Bolt Lift Kits
If I were still in the engineering biz, I would try to hire him.
I have had Randy Ketchum do my gunsmithing that is over my head [TIG weld up gas fixtures for semi autos and TIG weld lugs on Semi auto pistol barrels]. He has always been great to work with. And he got hauled into court over stuff that was all the customer's fault for not knowing what they wanted.