Given the context you've just provided in this thread, that still counts as a transaction, so no. The law isn't that dumb I'm afraid.
Rent a gun and play at your site for a bit then get your UKARA before buying - you'll thank us later. A pistol is basically useless vs. even the most run-down rental gun, so it's worth doing.
My first airsoft gun was a pistol that I bought for some filming at uni, way before I ever got into airsoft skirmishing or milsims.
I still have it, and I wouldn't go into a skirmish without it (unless I'm being lazy and just taking my G19 and nothing else - my "Hawaii Five-0" loadout) but it won't stand up to anything rifle-wise, even bog standard rental guns.
Also, might I suggest a thread shift to Guns Gear and Loadouts at this point?