In reply to Sl@te Head:
You need proof you're not a nutter from your local police, show it to the governor and they will issue you a permit to hire a rifle, Sysselmannen state a 'certificate of good conduct' is required . I believe the issues lie mostly on the UK side. If you're only around Longyearbyen then a rife isn't so essential as it's a busy area (I did not just say that!).
IGP, sportsenteret, SAG and Spitra hire rifles, flare guns are far more important.
They may provide a little training. But it's best you get some before you go. Can't speak from experience as we take our own guns.
You will either get a scratty mauser with a swastika on it or a ruger m77. Flare gun will be a cal 4, either a hk p2a1 or an old East German geko.
Pm me for more info
Post edited at 20:58