Don't Be Fooled By Cheap Kits That Only Reduce Trigger Travel - If You Want a SERIOUS Upgrade, This Is What You're Looking For!
The kit includes a polished sear, sear spring, trigger spring, and trigger bar. The results of the kit is a shorter, lighter, crisper trigger pull. This is the kit gunsmiths are using, and does require minor fitting of the trigger bar and very minor fitting may be needed to make sure the sear moves freely.
Don't be fooled by cheap kits that only reduce trigger travel, if you want a SERIOUS upgrade, this is what you are looking for.