The basic Glock is a good gun, Gen 4's not so much. Personally, I'd trade it on a G30 if I could make a good deal on one. But don't get
hosed. If you come out better selling them, bide your time and do that.
“Nine-tenths of tactics are certain, and taught in books: but the irrational tenth is like the kingfisher flashing across the pool, and that is the test of generals. It can only be ensured by instinct, sharpened by thought practicing the stroke so often that at the crisis it is as natural as a reflex.” ~ T. E. Lawrence