Mine is a B&J Machine P500 Universal Sight Tool. Of all I have seen or used, it is the most truly useful universal sight press I have encountered. It usually can be found for ~$120.00, or so. I have found it useful on H&K, Glock, SIG, and several other minor brands of handguns.
I broke a bolt, and one of the screw-in press pieces on mine, and called the company directly to order the replacements. While talking to the owner, he informed me of an update to my old original tool and asked if I would like to upgrade. It wasn't until after I got off the phone with him that it occurred to me that he hadn't asked for my credit card info. I called back and offered to give it to him, and he declined, telling me that there would be no charge for either the replacement parts or the upgrade, not even shipping. I can't say if this is his normal policy, or just my lucky day, but it surely shocked me to the core. Sure enough, about 3 days later, I had a package in the mail with all the parts I needed.
So, the upshot here is this: not only is it a very well made, flexible, & functional tool, but the maker is a righteous guy who stands behind his product fully. Would I buy the tool to do just one pistol? No, probably not. But I have a bunch of handguns, and particular likes and dislikes about the sights on them. This tool has easily paid for itself over the years, & I've never been sorry I bought it. YMMV.