bought two trs25 for both of my SK
This is my set-up, so far AK mags (SKS-KD) work ok after around 500+ rounds, didn't try trs25 yet-trying it tomorrow
This is in a way a derivative of SKS-D, which, unfortunately I don't have as they are not readily available in CANADA
As to the photo above [please don't take it personal

]
I am a
BIG OPPONENT TO REMOVING THE BACKUP OPEN SIGHTS or making them unusable-just like a so cold scout mount above
No matter what, there must be back-up sights, especially, if you are creating SHTF/ hunting rifle: check any modern hunting rifle... there is even no any open sights on most of them.
Did those ppl, who created those, hunt? May be they did in an ideal greenhouse?
In many cases, optics may be off by banging into a branch or fall of the rifle, which is not that uncommon, believe it or not or worse-optics may be gone and destroyed by a more significant impact.
Now Imagine, your scope is not x2-20 x40-60, but a regular x4-x9 x40-50... and boom, there is an animal within 20 meters... will you try to use your scope still? Maybe not, aha I forgot, you will use your red dot... but your battery died.. now what?
But that's hunting-you may come home and fix it.. and even then... there are sudden bears around you when using scope is not possible to quickly acquire your target.. now imagine when people rely on optics only, especially battery operated, for SHTF.... and that is really insane, those ppl have never seen a total collapse of society and do not understand what does it mean: no soap, no matches, and, of course, no batteries for months and months and months to come...
By the way, with this SKS, I easily take down a 7" metal target with open sights alone, which is not a big deal, but for practical shooting-that's more than enough