The first thing that that airsoft players look into any gas blowback gun is how to have aa heavy kick/recoil just like in the real steel versions though in real steel, they prefer less recoil as it means better handling and accuracy. In this video Ollie Talks Airsoft talks about the setup he did with his Tokyo Marui MWS Gas Blowback Rifle to get the maximum recoil... "I Love trying to make my MWS have as much recoil as possible, does nothing for the performance but just makes it way more fun to use!

The Weight of the Bolt, Bolt end and Buffer give the recoil and the improved gas seal of some mags increases the speed the action cycles, the combination of both leads to a shooting experience with more recoil and felt kick in the shoulder (for an Airsoft gun!)."