For air rifle, I use the FrankenRifle – an Anschutz 2002CA with an aluminium stock, which has had so many parts replaced over the years that I probably only have half the original rifle left — it’s had a new stock, a new cheekpiece, a new buttplate, new sights and so on over the years.
For smallbore rifle shooting, I use an Anschutz 2013/690 with an aluminium stock. It looks like this one here, but in black and yellow rather than blue and silver:
