TargetTalk

I am buying it from a webshop. Which measures should I take of my hand to decide which grip size to order?

Are there any parts or accessories that would be wise to buy at the same time? This will be my first air, gun, so currently I do not have any air-gun related gear at all.

Is it likely that the blue or gold colored air cylinders will be look worn faster due to scratches than the non-colored one?

Gorm

The cylinders are anodized so unless you are very tough with them they don't show much wear. I would get a single shot magazine, and a dryfire magazine with it. You can shot single shot out of the five shot mag but the single shot makes it very easy.

look up the Rink Grip website, it has all the hand measurements you need to take