DPP Titanium Red Dot Mount/Plate/Adapter Compatible with Springfield XD Trijicon RMR/SRO&Holosun 407C/507C/508T

Works perfect, I do recommend you have a pro install it I'd you have the XD, as getting the rear sight off is extremely difficult even with a sight removal tool. But, the price is great, fits perfect, very stable, and changes the way you train and I have mine sighted were the my red dot is set right on top of the front sight.

Looks like it should do the job

While this item is compatible with the XD .45 and the Holosun 507c X2 series optic, there is a slight amount of lateral movement of the optic at the front. I believe the mounting pins on the optic do not fit tight in the holes on the adapter plate. This allows for slight side to side movement of the optic on the plate. For anyone looking to do the same I would recommend using the Springer Precision dovetail adapter plate instead of the other offers available.

Doesn’t fit although it says it would and it’s past the return date so I’m screwed

I used this with a cheap red dot I had on my XD9 and it works well. I had to ream the mounting holes a hair on the red dot (think it was a 1/4" bit?). Anyway, the mount itself is nice and it comes with the anti-flicker sealing plate which I ended up needing. I did have to order #6-32 x 7/16" Flat Head Socket Cap Screws (monsterbolts.com) to use the anti-flicker plate as the longest screw that come with this were too short (if you have a genuine RMR this may not be a problem). I took it to the local gun shop to remove the rear sight since the XD is notoriously hard to remove ($20). The mount can be installed and removed easily with the set screws if needed. I put 100 rounds on it and so far so good. It held zero. Nice product. I'll update if I have any issues. Edit: I've had this for 6 months now and probably close to 1K rounds on it. The only issue I've had is there was a slight angle on the mount (you can see in the last pic) and the elevation was maxed so I added a 1.0 degree ADE shim and longer screws). This could just be the gun slide and/or red dot so YMMV. Otherwise a solid mount.