I would recommend a desert eagle. The Glock was unfortunately nerfed and it's current freeze level is quite close to the Taurus lol. In other words, buying a Glock would be very stupid especially if you're going to use it in spar as I would guarantee you, people with AKs wod easily beat you.

There aren't many 'good' guns under 15k and the ones which were have been nerfed due to obvious and understandable reasons. That is why I would recomend two pairs of Deserr Eagles as they are very fast guns and when it is single, it totally owns as the freeze is very less. It's sold in the 'Gun Point' shop left of Mercy East Hospital.
If you decide to buy it but are unable to find it, just PM me and I'll be glad to take you there )))

Trust me, after it's nerf it sucks lol. In spar and in basing, I've tried it and it's freeze is very very high now.