Well, I sold my glock 20, Gen 2.

[Criticalt]

And bought a new Gen 4.
It fits my hand better and shoots alot smoother.
I also bought a Rock Island Armory M206......just because im still waiting for a gun I ordered last week so I got antsy.

 

[Jaywmustang]

Waiting on my g20. Are the grips on the gen 2 smooth?

 

[Criticalt]

Waiting on my g20. Are the grips on the gen 2 smooth?

Not smooth but nowhere near as texured as the gen 4.
Also the gen 4 has duel recoil springs that keep the gun on target better.