I shot in a level 1 in davao city yesterday. 5 stages. I'm 1 year and a half into competition shooting, and my USP is 1 year and 3 months old. I still wouldn't qualify as "good" IMO but I did improve. I shot 75% of GM Edwin Gotamco. the light spring allowed me to shoot splits to as fast as i could pull the trigger and with a lot better consistency i think. I still got reasonably good hits, approx. 70% in the A-zone. I'd definitely recommend this recoil spring for competition use in a USP.