On the Sig Saeur P320 there are two different versions for the one shown in the video. The newer version comes with a 20 round magazine instead of the 30. 30 round magazines are no longer even sold, and you must instead order 20 round. The new version seems to only come in tan.
AirGun Depot does not currently seem to offer the newer version, and on a different site it is on back order. I assume this is because it has not been released yet. Initial hunting on the Internet did not turn up what the difference was.The obvious cosmetic changes are a longer magazine like the "real" military version and the correct number of levers/buttons on the left side.
My best guess is the new version is better designed as a training device for someone learning the P320.
A couple of other things to think about if interested in the pistols in the review. Some of these have rifled barrels, others don't. Some only shoot BB's, others are pellets.
I am going to purchase the newer version of the P320 for two reasons. I have a friend who needs to learn basic gun safety and a proper shooting stance. I also have neighbors who would love to fire a CO2 pistol in my back yard which means I have less trouble with my shooting.
Hope that helps someone.Â