Why would you be leery of PO,s? I have a P-14 I,ve been shooting for over 23yrs. with nary a problem and a P-16 for close to that many years. Both still run like a champ with many thousands of rounds thru them. Good luck on your search.
I've been using the Arms mounts on both ACOG's and Leupold Mark 4's for years without a problem. Thrown into barrels and onto carpeted tables, nary an issue.