The conical screw head does have a bare metal wear mark now.
I removed the $100 barrel tuner, $300 scope and $80 mount and re-installed the factory front sight after realizing I was getting too obsessed with accuracy from this magnum springer pellet rifle.I have custom centerfire and rimfire rifles and pistols that do that job far far better without adding or subtracting an O-ring or two or installing set screws and hoping for the best. Or worrying about destroying a nice scope. ZR mount assigned to the spare parts bin for now.It was fun while it lasted.Iron sights at 34 yards was actually a blast from the past today, even wearing my crappy multi-focus glasses.
I wish I had the money to get into PCP's now days. Being retired I'm stuck with what I got.I'm sure any decent PCP could easily out shoot my little pea shooter at 600 yards with both eyes closed.