I'm looking for a plate to mount a 509T onto a Glock MOS and trying to figure out what my options are. I'd prefer a steel plate. Holosun makes one (https://www.holosun.com/index/produc...il/id/193.html) that I thought I heard was steel? But I don't see them for sale online anywhere? Are there any other options or has anyone tested various plates and found which works the best?
Also, what height iron sights do I want for lowest possible co-witness?
Thanks