How to fix the pistol bug
Since valve updated the way weapons are given to players, the map got broken. But there's a quick workaround for this if you want to spawn with Ak-47 and Desert Eagle. For example:

- Make sure sv_cheats is set to 1 (it should be set to 1 by default)

- use this command on console:
bind mouse5 "give weapon_deagle"

On beginning of every round, you just have to press mouse5 to equip.
For me, works fine on mouse5. Feel free to change the key you want to bind this.
As an additional info, here's the following commands to get other pistols.

give weapon_deagle - Desert Eagle
give weapon_revolver - R8 Revolver
give weapon_glock - Glock-18
give weapon_usp_silencer - USP-S
give weapon_cz75a - CZ75-Auto
give weapon_fiveseven - Five-SeveN
give weapon_p250 - P250
give weapon_tec9 - Tec-9
give weapon_elite - Dual Berettas
give weapon_hkp2000 - P2000