PX4 SD - Stock Hammer Spring Question

[Gudemn]

I would appreciate an education regarding the ins and outs of my PX4 SD. I haven't found the right resource to provide the information I'm looking for.

Beretta has Cougar "D" springs in stock again, so I purchased 3....one for my wife's Cougar 8040, one for my PX4 compact, and one for the SD. Then it hit me that the SD has a different trigger group than a stock full size PX4....true or false?

If true and it does have the "Competition Trigger Group" or something similar already in place...should I bother installing a "D" spring? I ask because the Comp Trigger already boasts a 30% reduction in pull in SA. I don't want to install a "D" and inadvertently increase pull weight.

I appreciate any input in advance.

[MSparks909]

Go ahead and install it. I installed the competition trigger pack and a 12# Wilson Combat hammer spring in my full size PX4. Both the DA and SA are much improved over stock.

[Edwin]

Competition trigger group has the same weight spring as the regular one (18 lbs), it's just coated. D spring is 16 lbs.

[Gudemn]

Thanks for the insight