I do not own nor have I ever even handled a Krebs AK, I do have fairly extensive trigger time with an AK-103K that Chris from AK-USA built for me. Matter of fact, I was one of the first people to buy one I believe. I have a detailed review of mine on Chris' website as well. I had an SAR-1 converted to look like an AK-103K as well by a well-known AK smith (well, well known for being a crook now). The AK-USA was by far superior to the SAR-1. I'm a big believer in customer service and I can't say enough good things about Chris. Very easy to get a hold of and very thorough. After many a round through my AK-103K from AK-USA it just keeps getting better. Accuracey through mine is truley superb as well. I don't think you would displeased with either from what I've learned however.