.
Be sure to use it (the M-86).
About 20 years ago, I bought a new standard-grade M-86EL (Extra Light) & used it for one season, before my friendly FFL had a likewise new Hi-Grade M-86EL (w/blued, engraved & inlaid receiver) which he allowed my full purchase price of my standard grade towards.
Since the difference was only $300 for the upgrade, it took me all of 10 seconds to decide/do it.
I
really enjoyed the fru-fra during those quiet times, when game wasn't moving much.
I was reluctant to D/T the Hi-Grade's tang for a new Marble's tang sight, so I simply attached the tang sight using only the new/longer tang screw.
I shot/hunted that rifle for 5 seasons/years w/o any issues with the sight moving, etc - it worked because the underside of the tang sight had a matching concavity with the tang's convex profile (but I made sure to check the tang screw for tightness prior to every outing).
.