Thoughts on Dueck Defense, Inc. Red Dot Back Up Sight Bases?

I'm looking to add a red dot to a gen 3 Glock. I've heard of Dueck Defense's AR sights, but then came across an interesting product, Dueck Defense, Inc. Red Dot Back Up Sight Base. Seems like all you need to do is remove the back sight and this will slide in its place. The base itself has irons on it and then also the screws/holes for mounting a red dot. Seems almost too easy/.good to be true. Anyone have experience with these?


https://dueckdefense.com/shop/handgu...jicon-rmr-glk/

My thought is for $160 or close to that you could get the slide milled by a shop. You also could buy a pre-milled slide for not much more and keep the original if you ever want to change it back. Seems kinda pricey for what it is to me.

Get the slide milled, it works better.