FWIW, I have 2x Ruger 22/45 Lite's (both have some Tandemkross accessories/parts) and 1x Browning Buckmark (totally stock Silhouette model).
Ruger's (like my STI's) run like sewing machines. The Buckmark doesn't. Just my experience with my guns. Both get cleaned annually and oiled regularly. If I shoot rimfire steel, it'll be with the one of the Ruger 22/45's.
John