Hi, welcome to Counter Strike Online Wiki! Thanks for your edit to the QBZ-95B page.
FAMAS F1 has three burst fire in game instead of four. I will edit the page back. --ConTraZ VII 01:09, October 29, 2011 (UTC)
About PSG 1Edit
I think the Krieg 550 Commando is the SIG SG550 Sniper. My points are:
- It can carry up to 30 rounds.
- It uses 5.56 NATO
- CS database uses entity "sg550" for this weapon
You can refer here
Sample picture: 
While PSG 1:
- Uses 7.62 NATO
- Can carry up to 30 rounds.