Thread: Sight ID and removal

Got this with some knick-knacks the other day. Quite a neat little flip leaf sight. Best I can tell from wacking the verniers down the very worn barrel is about 315" so probably a 303 of some sort. Not big enough to be an 8mm.
Big question is removal. It looks like it is sweated/soldered on but thought there may be a screw underneath the spring but after taking the sight blade out the spring is quite solid in there. Didnt want to wreck the spring trying to prise it out or heating it to get it off if there is indeed a screw in there.
I could be a roughy and grind down the barrel stub whilst looking for a screw to start showing but that's a last resort.
Cheers