well i'm fitting ghost rocket 3.5lb connector with the overtravel stop as we speak. helps a lot if you tend to shoot left with your g19 lol.
scherer 3.5lb connectors are great too, and only like $8. (no overtravel stop though).
i also have a glock oem 3.5lb one, not bad, but it's a little mushier than the ghost and scherer.
for tac lights i have my streamlight TRL-1 i paid $99 for on opticsplanet.com, best bargain/quality i could find for the price.
scherer 3.5lb connectors are great too, and only like $8. (no overtravel stop though).
i also have a glock oem 3.5lb one, not bad, but it's a little mushier than the ghost and scherer.
for tac lights i have my streamlight TRL-1 i paid $99 for on opticsplanet.com, best bargain/quality i could find for the price.