Sig Sauer SIG556xi Adaptable Rifle

The Sig Sauer SIG556xi Adaptable Rifle is one bad ass rifle that allows you to switch between 3 different calibers 5.56, 300 blackout and 7.62 x 39 AK round. The Sig Sauer SIG556xi Adaptable Rifle also has two different lowers available to accept both AR and AK mags. See the picture and video below.