It does, I have a tungsten rod and 22# spring on mine and it definitely helped. Shoots like my 19, almost.I also added the plastic bump which also helps. Got mine from the Glock Store in California.

Pap
_________________________
Mike Allen
RKCC-CM-086
True West Magazine Maniac
Randall Collector
Behring Made Collector
Ruana Collector
Glock Fan
NRA- Life Member since 1975
mikenlu99@aol.com