I just edited the weaponinfo.xml so they were closer to the OG game, and yes, the spas shreds.
I buffed the damage of many weapons, and balanced some, for example, like the ruger does more damage than the m4, but the m4 has better distance, and the m60 has a lot more damage, but it has less range than both of them.
Have fun!

ps: idk why the mod is tagged onto the Volkswagen category, sorry for that guys:[