How many have done/had trigger work on your sub-2000 ? I installed the MCarbo spring kit but after seeing how rough the contact points were I polished them, reassembled and so much better, but still a very long pull. Used a marker I covered the contact surfaces, reassembled and dry fired a few times, took it out and seen how much the hammer contacted the sear, filed off 80% of the hammers contact edge, repolished, dab of grease and reassembled, I will show trigger pull tests when I get back to work and use the gauge but man oh man is this sooo much better. Vast improvement over stock. Still not a target trigger, but for a combat/defense weapon it's perfect .