Black Market Weapon Glitch

Ok to put this short and simple.
I recently won awm+deagle+type89 from gp crates. When i put them in my bag I went into a game and when my guns were supposed to show up they DIDN'T show Instead it showed up as a sg552+knife+grenade when I noticed this I checked back and noticed that awm+deagle were in bag 1 but it showed my gun as a SG552. And with the type89 when I'm supposed to get type89 it shows only a knife+grenade What's the problem. It's not fair that I used so much gp to get these guns and they end up getting glitched for no reason!!! It's wasting my time period for these guns =(