looking at a blaser f3 combo. unsingle barrel 2010.o/u barrel 2011 date code. wondering if this combo, started out as a unsingle and the o/u barrel added later
Its a bit late to be responding to a thread that’s 5 months old but Incase you didn’t get your question answered. Blaser barrels are all interchangeable without having to have the barrel fitted by a gunsmith. So with that said you probably not ever going to find mated barrels and receivers. I have purchased 3 Blaser trap combos and none of them had matching serial #.