I bought a Gen 3 model 23 online and it only came with one mag, a right-handed eject, LE/Gov-only. Today I was in my LGS and they actually had Glock 23 mags for $24.95 so I brought 2 home. I'm checking fit/function and notice a couple of things. 1. They are Gen 4 (ambi. mag release cutouts) 2. They are harder to insert and drop than the original 3. The feed lips are different Any opinions on the newer mags? I'm going to guess they don't work as well on the Gen 3 pistols? Should I look for a trade with someone or just jam them in harder when I insert and not worry about it?