He was very easy to deal with and has been doing them for a long time. I put the trigger group, the form, and $65 in the box. About 6 weeks later, it came back and I snapped it back in.
I posted a review on here a while back, but I laughingly called the OE trigger on my yugo a "2 breath trigger"..... It took so long and so much effort to pull it, I had to stop and take breath in the middle. When it got it back from Kivaari, it was a very nice 2-stage trigger. Stage 1 is nearly zero effort, stage 2 is about 5 lbs, crisp, with minimal over-travel. Between the trigger and the sights, it cut my group sizes in half.
And just for being thorough.... technically the model rifle you have listed is a 59/66A1. The 59/66 doesn't have the night sights, the 59/66A1 does.