The rear sight was much easier. I made 2 piece stainless bases from one piece Stratton Custom T/C Encore scope bases. I cut to length, milled the bottom flat and drilled and counter bored the proper hole spacing for the Tikka. I attached the bases with J B Weld (of course) using a TPS BaseBed 2 piece scope base mounting jig. I then cleaned up excess JB Weld. After 24 hr curing time, I removed the jig, cleaned up. cleaned screws and threads with brake cleaner, applied loctite and torqued base screws to 25 inch pounds. I want to tell you that the TPS BaseBed jig is the cats ass. When I re mount my scope after taking it off, after running the scope ring crossbolt nuts up to the clamp, when both are torqued, they only turn 1/8". That tells me the 2 piece bases are in perfect alignment.
For the rear sight I used an X/S Low Weaver Back-up Ghost ring receiver sight, with a couple of mods. Instead of the little common head attachment screw that comes with the sight, I installed a crossbolt with a captive thumb nut for ease of attachment in the field and not to be dropping small parts that I would never be able to find. Since I put an angled slope on front and rear of my scope bases, I cut an angle to match on the sight where it butts up against the base. This is the only kind of rear sight that I use on my rifles, in cinjunction with the white stripe front blade. I've tried them all and I see and shoot best with this combo. RJ