Thanks for the reply.
You're right, 1" ring height would barely clear a 50mm bell and not a 50mm lens. A mount with built-in cant needing even more height.
But with a low powered variable scope it's not an issue.
I understand the high-tang difference isn't huge but an AR15 scope already feels a bit high for my large face.
With 1.5" high mount on Stag10, do you use a cheek-riser?
If not, do you have a chin weld or a really good cheek weld?
First off, the "high" rail height for the DPMS is the same as the regular Armalite, SR 25 etc. It isn't really higher, it's just DPMS used three different heights and the last one is the same standard everyone else was using. It makes zero difference for ring height. The difference between lower and high isn't noticeable, we're talking mm's here . People are concerned about this difference only to ensue that the picatinny rails of their upper receiver and handguard line up perfectly. A step up or down looks really bad and makes it non continuous/useless. In short this "high tang" is the normal height.
I don't have my Stag 10 yet (bought receiver and parts to build my own). However I do have a number of different A10/AR308 rifles and I used the typical 1.5" height (or close depending on the brand) without any issues. This also depends on how you hold the rifle. I prefer my head being up, rather than what a lot of people do with tilting their head down and looking towards their eyebrows to get the correct sight picture. With a head more upright position and this height, the sight picture is perfect when I snap up an AR308 from the low or high ready. It's right there. No searching for it. Which makes using 3X useable for fast shots. It's not if you're having to move around to get your sight picture. Also it's far more comfortable when shooting from a bench if I'm not having to cram up on the rifle and look upwards. I use these heights on any monlithic or monlithic style rail system. Keep in mind they are usually 1.47" to 1.49" from the base on top of the rail to the centre of the scope.
Here's a Kinetic Sidelok mount with 1.49" on BCL 102 and on a HK MR308A3-28 . Works perfect.
Here's the same scope mount with a 56MM NF 12-42X scope on a rifle with a Cadex Dual strike.
This is the ADM recon which is 1.47". This is on a DPMS G2 recon 308. It's perfect.
One of the main issues we used to have with mounting scopes on AR rifles was with the molithic style rail systems. Once the handguard had a continous rail from the rail on the top of the receiver, most of the rings we had weren't tall enough. I had to go extra tall for NF rings and a 50mm 5.5-22x to put it on an AR10 with a continous rail. These 1.5" AR single mounts made life a lot easier. Plus as I mentioned, they seem the perfect height for CQB, which also helps with the sight picture for tactical/target. Also the stock on an AR rifle is straight without the drop in the receiver/stock of most conventional rifles. While mitigating barrel flip by bringing the recoil straight back, it also makes the extra height required from these mounts/rings to get the correct sight picture.
I suspect you squish down on the stock fairly hard and likely tilt your head forward to get your sight picture. It's extra strain and an extra step. Plus often this contributes to scope bite with the bigger calibres and short eye relief. It's something worth looking into. Ultimately it will be what works for you. I find these work for me. But I'm average height. Everything is generaly made for me out of the box. This scope height also works that way for me. It may not be the case for you.
I hope this helps. Good luck.