Shield 45 Heavy (MA) Trigger Spring Parts

[sabre66]

Looking for a MA Compliant 10lb trigger set up. Primarily the trigger return spring. I may need to use the sear spring and striker block spring too. Not certain. I need to retro-fit a stock Shield 45 trigger to a 10 lb pull.

I know a lot of people swap out the MA compliant parts to get a lighter trigger pull, but I need to go the opposite direction and increase it. Sounds stupid I know, but cheaper than removing my aftermarket nights and selling it.