Almost all models have their pros and cons, hence why I have several and like to shoot them all.
On both my G35 & G21 I have storm lake barrels, titanium firing pins and plungers, fulcrum triggers 2lbs or so pull, all new springs, heavy tungsten guide rods and spring, extended slide levers, extended slide lock, extended mag release, recoil buffer and pachmayr grips. The G21 has titanium pin kit and a few other shiny parts.
I had some Meprolight Adj Night Sights on order but after 5 months of waiting I canceled the order, still looking for those. Probably just order them from Dawson precision.
After all the mods they shoot nothing like a stock glock. I love these guns now. I let people shoot them at the range and just
because most people are used to the long hard trigger pull they come with from the factory.
I love shooting my newer 1911 tho.