I have a DPMS Sportical (entry level AR, please dont bash me for that). I love my weapon and have have added many goodies. But the trigger sux! I would love to get an awesome trigger installed. Something light and quick and 200 or less. Would would you suggest. And I dont understand the difference between the single stage and two stage either. Use of weapon? All around, plinking, target and light hunting with no children in the house.