SIG came out with P320 pistol, a striker fired version that takes a good part from P250. While P250 had quite a few problems, P320 seems to address problems. The pistol is ambidextrous, and has the same modularity as P250. It will come with night sights. It is a nice pistol but the MSRP $713 could be putting off a few people.
Trigger is pretty decent with decent reset. It should compare well with Glock and newer vrsion of S&W M&P triggers.
556xi is a rifle that can change calibers. The top part is the serialized part, and trigger group can be changed, which allows different calibers and magazines. For AK rounds, it uses US Palm's AK 30 magazine. Depending on the configuration price ranges from $1300 to $1500. There is also a pistol version too.