509T on an M&P2.0

[jd950]

Only if you consider stuff like RMR mounts tapped for #4 screws and a dovetail that a rear backup sight will drop right through to be a problem.

Fair enough. I only have a small sample size of maybe a couple dozen for M&Ps with holosuns and mostly EPS, and we have not had issues. Just lucky perhaps. Not doubting others have had problems and clearly what you are describing is not user error.

[Ethang]

Although I have seen the threads about C&H quality, I would note that for reasons beyond my control, I am required to use the C&H plate on the M&P 2.0, along with a number of co-workers, and we have not had any problems with those even under fairly hard use. Maybe there was a bad batch? We have some fairly clear guidelines on torque, thread locker, one-time use, etc.

I was interested in the Calculated Kinetics plate for the gas blocking feature, but have not seen anything on holster comparability and that could be an issue. I doubt those would be approved for that reason. The eleven71 plates look nice and if I could do so, I might use one. I am tempted to see if i could get one on loan for T&E, and if approved, I would buy one, or maybe I should just buy one and submit it for evaluation, but I don't know how many other folks I work with would be willing to pay the price.

I often take user complaints about products with a grain of salt. I see a lot of plate screws improperly torqued and coming loose, being damaged, and sometimes then shearing. For whatever reason, this seems most common with Glocks. I don't mean to say it is a Glock problem, and the fact Glocks are most common may be the simple answer. We require the LE/Mil steel plates on Glocks now.

I have see people mounting and re-mounting optics without adequately degreasing screw holes, improperly using thread locker or using the wrong product, or not letting it cure, guessing at torque or not even thinking about it, re-using screws that are really intended as one time use, etc., and that could play into user complaints.

Just some additional points to consider.

Edit: The EPS is probably the most popular holosun I am seeing, and perhaps that is also a factor. I have a vague memory of some mounting problems a while back with the other Holosun models.

I tested one of the Dogtag RMR plates on my M&P and it does reduce the blowback from the LCI. Machining was excellent. I did have problems with the Safariland 6290 ALS releasing. I spoke to the owner and he was going to test it out and modify the plate. If I need another plate I will look to them for it.

[DLWinner]

Thanks again for the help and suggestions and big thank you to @MD7305 for sending me the mount. I was finally able to install everything yesterday. Can’t wait to test it.

[breakingtime91]

If you will message me your mailing info I have a new, unused Calculated Kinetics plate you can have, free of charge. It was given to me and I don't have any 509T optics. Their plates are top notch. It was fitted on my slide to test fitment with Safariland ALS holsters, other wise new in package.

Did the dog tag plate work with the als?? Thanks. I have a eps dog tag plate that I'm installing today on a mp 2.0 compact but I do not have a duty holster to test yet


Edit: didn't see previous posts dealing with my question

[DexterTaylor]

For those who check this thread in the future, the Eleven71 plate for the 509T does require the use of BUIS taller than S&W factory suppressor height sights. I don’t know what height would be required, but the factory suppressor height sights are not visible at all through the optic window.