Welcome to the forum.
Depends on what you're plan is for the tactical. SRS 2 comes with an L-Spring and an extra hammer spring. (One for SD, & one for Range/competition)
My best advice, call CGW. As I've said many times, they are great guys to talk to. Let them know what you want to do, they'll help you get want you need. And won't try to sell you something you don't need.
Oh, and either way, buy at least 5 L-springs. You'll thank me later[emoji6]