It sounds like some confusion here, the RRS Pro clamp uses a knob and the Clamp adapter is different it has a clamp. I know for a fact the RRS Pro Clamp works with the Cal as I have one, can't say for the clamp adapter.
I don't own the Area 419 clamp but do have other items from them, they make nice parts! I do have 2 of the RRS clamps and like them, I don't think you can go wrong with either.
I picked up one of the Armasight IR illuminators and am happy with it. Looking for a good way to weapon mount it where it can be adjustable, looks to be 1" or 25mm body.
I'm looking for something $1500 or less that is weapon mounted. Going to coyote or rabbit hunt a couple times a year at night inside 150 yards. Does anyone make something that will work without spending $3300 on a Pulsar Trail xq38?