Nobody reads the Change Notes section so I'll paste this here also:

Added in 24 new guns:

• Calico M950A
  
• Walther PPK
  
• Tula Tokarev
  
• FN Five-seveN
  
• AR57
  
• FN P90
  
• H&K MP7
  
• Suppressed H&K MP7
  
• H&K MP5
  
• Micro Uzi
  
• Zastava M21
  
• Desert Tech MDR
  
• Kel-Tec RFB
  
• Wieger StG-940
  
• Kar98k
  
• Mosin Nagant
  
• H&K SL8
  
• Springfield M1903
  
• Atchisson AA-12
  
• Fabarm FP-6
  
• Kalashnikov RPK-16
  
• IWI Negev
  
• Mk153
  
• RPG-7

Added in new mechanics for existing guns:

• Pistols and Sniper/Marksman Rifles are now semi-auto. Pistols can be fired (almost) as fast as you can click, while Snipers/Marksman Rifles are a bit slower.
  
• The AN-94 now has its unique 2-round burst functionality. Pulling the trigger causes it to fire 2 rounds at an extremely high rate of fire followed by the rest at its normal rate of fire. These first 2 rounds are also extremely accurate. Stop firing for a moment to reset it.

Adjusted the sounds for several weapons.

Lots of bug fixes.

This update was over 6 months in the making, so we hope everyone enjoys it!