If you want to mount a traditional 1” or 30mm scope to your Ruger Mini-14 and leave it there, life is simple – the Mini-14 comes with 1” rings, and 30mm are readily available if you need them. Easy, done.
If you want a quick detach option with a return-to-zero capability, Warne and a few others make the product you want. It’s all good.
If you want a scout mount setup using Weaver or picatinny rail for long-eye relief scopes (most often pistol scopes) or for red-dot optics, you’re in luck with two great options, the UltiMAK Scout Mount (left) and the Amega mount (right). Choate (follow link, scroll down) also makes a front end option. Rock-n-roll.
However, if you’re particular like me and want to mount modern red-dot sights easily, and easily interchange them with a variety of more traditional optics using standard picatinny/Weaver rail, and be able to clean the weapon without having to re-zero everything, there are a lot of probably not-so-great options (I haven’t tested them all, so that assessment can change). It’s my only real complaint about the Mini-14, especially since Ruger could easily correct the issue.
There are a few side mounting options that also allow use of the iron sights, something I value. The primary one on the market seems to be the B-Square, which is what I own and have used (pictured below). I like it, but the rifle finish will be scratched and I don’t trust it to withstand getting knocked around, and it must be removed to clean the carbine (at least Tactical versions).
Eagle make a similar QD mount (if you can find it for sale), as does UTG. There are some cheap Barska and NCStar copies not worth buying, according to most reviews. Armson makes a side mount that appears to be a drill/tap job.
The next type of mount is a Ruger-to-Weaver/picatinny rail that mounts over the bolt. Some are advertised as see-through while others don’t attempt to leave the irons free. B-Square makes of these (pic below) and has mixed reviews; solid, but difficult to use the iron sights.
This would be ideal – if with clear irons and cleaning could take place without removing it. I might try one and dremel the channel deeper if needed.
IMO, there is a gaping whole in the market for someone to create a Weaver/picatinny rail that will sit high enough to allow use of iron sights and cleaning of without removal (or QD with return-to-zero).