I’m thinking something was lost in the translation there. HRT worked with that magazine fed Russian semi auto AKish in a cut down pistol grip for a bit. I’m not sure if that program continues but one was in the plan for the bunker rescue as I recall. Keeping a mag fed gun going on a multi breach operation is a lot easier for sure.
Each team is different as well as each mission profile. If I recall correctly a lot of Bill’s MTOE revolved around a dedicated dude or dudes with full size guns on the objective that could be called into action or not, the show still went on around them either way with enough manpower so no loss making one or two guys dedicated to that. In that scenario why not go full size with max capacity. Again different mission profiles require different set ups. If you think you are using them on warrant service your set up might be different than planned HR (or maybe not) or active shooter.
I pushed for and we got short guns and as many as we could get. I wanted one for about every three guys. For the same reason we mix and crossload other breaching tools. When it kicks off you want to stack the odds that the first few guys to arrive will have what they need to do about anything in extremis. I want them short and unobtrusive because those guys gotta be assaulters first then if a breaching problem arises they have the tool at hand yet it doesn’t interfere with their ability to shoot, climb, fight, or handle people.
So Id say it’s only wrong if you only have one option. If on an HR we get passed the emergency action plan (which may involve the shorty currently on hand) and in the planned assault we know there is gonna be a shotgun breach, then I want that dedicated dude with max capacity because 3-4 rounds can go fast with limited result. “Roll off, my door!” However in any other scenario I don’t want to be waiting for the shotgun breacher to make from way out at the academy across town where he was teaching a class to recruits either. Spread the small ones out and make sure they are unobtrusive enough that guys with rifles don’t notice they are carrying them. I’m curious enough to call Kyle and ask about this.