Smith and Wesson m&p 45acp apex trigger install question

[Strtspdlx]

I noticed the kit comes with two different sets of springs. One being yellow or green and the other being what looks like grey or white and natural. I'm under the impression that it is designed so the springs dictate pull. I'm looking for the heaviest pull for this trigger kit. The kit being apex #100-054. If anyone could help me out I'd appreciate it. Thanks

[nicholst55]

I'd suggest either looking up Apex on Youtube; they have several videos on installing their products IIRC. Alternately, give them a call and ask which springs you need to use.