I’d also though about the military shooter probably more often than not wearing GI gloves, as gate security forces and guard duty personnel will be expected to. Yet another layer of stacking tolerances which will throw off accuracy with a full grip and lower hand web purchase. The .45 ACP Glock 21 is usually too big for most shooter’s grip, and a holding a Glock 19 wearing gloves makes it feel like a Glock 21.
One curious addition is the pronounced beavertail on a striker fired pistol. I understand the geometry of the Sig 320 was developed from a hammer-fired Sig model and I wonder if they really considered its necessity.
The only thing I really know about the new Sig 320 service pistol is that it apparently met all the US Army requirements in the specification bid sheet. Now its left to be seen if those requirements weren’t dubious to begin with. I’d probably struggle to make a list of requirements which satisfies husky US Army Delta Force warriors as well as tiny female USAF military police who have little doll hands.
The beavertail is to protect the hand from the slide - again, its a gun ‘for the masses’, and features like that are exaggerated.