Great video - thanks! I bought a Mini 14 recently that I haven’t even fired yet. I wanted a carbine for just in case, and the aesthetic was appealing because of the traditional looks. Reviews also said it was extremely reliable with the M1 Garand style action. Mine has the green Hogue wrap over a synthetic stock which suited me fine. I plan on getting it to the range in the next two weeks. I’ll post a picture later. The green one isn’t seen that often.
If yours has a standard modern Ruger peep site, I have a tip for you regarding the two opposing set screws. You probably know the operation but for those who don't.... on the rear site, there are two opposing set screws that hold the peep stem. Windage is adjusted by loosening one and taking up the slack by tightening the other side. Get the windage adjusted first and then to adjust elevation, loosen ONE of the set screws and twist the peep up or down depending. Elevation is in half-turn increments. Tighten the one you loosened to secure the peep stem and shoot to verify proper elevation. Rinse and repeat if necessary.
Do not overtorque - in fact, right now only do it finger tight with a standard Allen key. Because.....
Now for the tip
Get some VibraTite VC-3 (tube or bottle). This is a flexible, removable thread "locker" that does not cement the fastener down like LocTite does. The sight's set screws on their own can vibrate loose and VC-3 is perfectly suited for this application because you may need to fine-tune your rear sight adjustment later.
Do not use any flavor of Loctite. Trust me - this is the stuff you want to use if you will be adjusting ANY threaded fastener later in the field.
So once you get the sight where you want (I like 50/250 yards for .223), remove only one screw and apply a little VC-3 to the threads. Let that dry for about 15 minutes. It dries to a gummy state sort of like licorice candy. Put the set screw back in tightening finger tight and then just a little more - don't torque too tight. Now do the same for the other side.