I just realized that SIG doesn't offer an optical (RMR type) P320 in any caliber larger than 9mm. I was going to have my .357 P320 Compact slide cut for an RMR but now I'm wondering if I should. Has anybody ever done a .357 or 40 S&W slide upgrade for RMR? Gray Ghost also specifically lists their slides as 9mm only.
Dang it. I like 357 SIG.