I strongly recommend installing either a Glock or Vickers Tactical extended slide stop on your G19. It's a cheap part, like $10-15 (Glock one is $10 on Brownells). You'll probably want a knowledgeable friend to install it if possible, though it's honestly not that big a deal to install it yourself if you're handy.
The Vickers is better IMO but I like the Glock one too. It makes a huge difference in getting reliably fast reloads. The stock slide stop sucks balls on non-competition Glock models.
Another good, cheap upgrade is a Jentra grip plug. It's $7 on Brownells, dead simple to install--I think it just snaps in these days, it used to have a small screw--and again it makes a huge difference in reliable reloads. The cavity behind the magazine well on the butt of the pistol tends to catch magazines, and putting the plug in smooths things out a great deal.
Other than better sights, I never bother doing anything to Glocks but those two cheap upgrades and a $1 trigger job with Flitz. But the trigger job is probably beyond what you want to get into right away, since it requires disassembling the whole frame.
The Vickers is better IMO but I like the Glock one too. It makes a huge difference in getting reliably fast reloads. The stock slide stop sucks balls on non-competition Glock models.
Another good, cheap upgrade is a Jentra grip plug. It's $7 on Brownells, dead simple to install--I think it just snaps in these days, it used to have a small screw--and again it makes a huge difference in reliable reloads. The cavity behind the magazine well on the butt of the pistol tends to catch magazines, and putting the plug in smooths things out a great deal.
Other than better sights, I never bother doing anything to Glocks but those two cheap upgrades and a $1 trigger job with Flitz. But the trigger job is probably beyond what you want to get into right away, since it requires disassembling the whole frame.