Please bear with this Glock newbie. I'm sure this has been posted a million times, but I can't get anything to come up. I'm sure it's me. I have a used, G19/Gen 3 arriving next Thursday as a CC companion to my brand new G35/Gen 4. So far I like the trigger on the G35 (4.5 lbs IIRC). What are considered safe methods/parts swaps to get a 4.5-ish carry trigger with a short reset on a G19/Gen 3? Thanks in advance.