The P320 VTac is getting some upgrades that should improve its potential for duty use. The slide cuts are gone and an optic cut has been added. Unlike the other X guns, the optic plate leaves the rear sights and it is supposed to be cut for DeltaPoint Pro footprint. SIG is also going away from the barrel pretensioning, which required some break in on the guns I have tried and lead to some concerns about reliability. Other than this SIG has another P320 model called an X Compact that has a subcompact length slide and X grip cut to compact (15 round) length. That gun slightly reshapes the beavertail and has a few other positive changes as well.