Fits All Glock Models
Reduced Power- Helps improve trigger pull.
Warning: Reduced Power spring is for competition use only - not for duty use.
(2)
Average rating 7 out of 10
( based on 2
reviews )

Works
These don’t seem to have a negative effect on the safety, and are usually easier to find than the OEM part. Not sure if they do anything for the trigger pull though. If so, it’s not much.
Not sure
Unfortunately I can't say that I noticed a difference.