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Manual action IPSC rifle/3-gun too I guess but I assume if that becomes a thing people will build game gun pumps

Or Ruger GSR but they're apparently a bit shit.

get a set of steel 2-piece bases, throw the front one in the bin, mill the rear one flat on top and bolt this to it, get a winged front sight ramp from one of a million suppliers and file down the...

There's actually heaps of custom options once you get on board with the idea of cutting stuff up

Maybe one of these if you could get one

ASG Scorpion EVO 3-A1 Rear Sight by LPA, Accessories & Parts, External Parts, Sights - Evike.com Airsoft Superstore

Yes it's simply too high to be nicely usable on a bolt action - the height of receiver over bore is already significantly greater than an AR so you'd need a 3 inch FSB

Elevation adjustment is hard to do.

Cut-down rear A1, traditional front ramp and file-able blade.