Assuming you want a Glock done...
These guys did mine:
https://zaffiriprecision.com/product...rmr-glock-cut/
In conjunction with Tampa Hydrographics. Single color cerakote, with holiday discount (they seem to run the deal each holiday) was $99 as Tampa Hydrographics as the prime contact. Turn around time, 3 weeks. (last sale https://www.instagram.com/p/BnRIvuTH...aphicsfacility)
$45 for Ameriglo Suppressor Height Sights
https://www.ebay.com/itm/Ameriglo-Bl...ss!33823!US!-1
and I bought my RMRs from either Cabela's last year when they were blowing them out or Shoot Straight's eBay page. Highest paid was $345 from Shoot Straight. Less than $500 all in. You could probably find used type 1 RMRs for less if you went used. I've seen them pop up for less than $300 on various boards and eBay. I'm reluctant to buy from "sum doood" on eBay if he's selling for that low. Don't buy the dual illuminated RMRs, they're garbage.
I've always had poor vision, since 3rd grade. I've never let it be an excuse but have always been and average/below average shooter. The RMR has really removed my excuses. Accuracy has gone up, speed has seen a slight decrease in splits but I think that has more to do with the fact I'm actually tracking sights now as opposed to point shooting on trigger reset. I'm glad L&M was mostly unharmed by Florence as he has my first Sig slide getting done and will get 2-3 more as funds allow (RMRs tucked away in the safe waiting...)
If you plan on milling an existing slide, it's going to be ~$650 minimum (when you factor in shipping on the slide). There really is not a way to do it cheap and right. The only optic I would mount (and have mounted) to a slide is the RMR (RM06 or RM07). The Aimpoint looks promising, but it will be very dependent on mounting solutions and how well it interacts with BUIS (I would never use an RDS on any platform I use for self defense without BUIS). We will see. If the new offering from Aimpoint is similar to the one mounted to the B&T USW-A1, I will probably stick with an RMR.
I've built three (1 colt, 2 glocks) with RM06, type 1's. My vision is beyond horrible, and this is the only way I can really aim. They've been problem free so far, but my round count is very low. They carry just fine, and hold up well to the banging around that accompanies EDC.
Very interesting.
My 50-something-year-old eyes are beginning (!!) to struggle with front-sight focus. Been wondering about rmr and how it can help.
Lots to think about and budget for.
Type 2 is the updated trijicon rmr. I think as of now, pre acro. Is probably the best bet.
The acro will have a bigger signature but I do not think it will mess with concealment that much.
I prefer a direct mill to the mos footplate for the rmr/rmr2. I believe it is a lot more reliable and you should not have to worry about the optic coming loose. Hopefully the acro will be better in the mos footprint. The mounting system should be better than the rmr style. And will have less components.
Likes pretty much everything in every caliber.