I installed a Jewel 2 stage trigger in mine. They're about $200 and incredible! They are fully customizeable in that if you were to shoot your AR competitively, you would need a 3 lb trigger. You can set the take up for 3 pounds but the release for 8 ounces or go the other way, take up real light with release heavier. It's all a Do-it Yourself install as well. I don't believe there is a better trigger on the market.
I have been out of the loop so I don't know if they do the AR10 configuration, perhaps you know that info already.
I sort of consider Bushmaster the "Dillon" of the AR world. They are very good with customer service.
__________________
______________________________
|