A snap is essentially like bitch slapping them with the shotgun or carbine. Using the side of the muzzle, to give it a quick snap to face/head. It usually requires sutures, but the structural integrity of the face is unchanged. Kind of along Bruce Lee’s one inch punch theory. You’re not hauling off and whacking them with it, just a fast movement with a hard metal object, using the side.
A strike is using your entire body, and the actual muzzle end. It’s not a winding up, telegraphing shove. It is still a quick, short movement, but you’re striking with the business end wear the BB’s come out, and using your entir body to generate a significant amount of force. Sutures are the least of their concerns upon impact. This technique, when done correctly, usually involves significant damage to the face/skull, and I’d argue is just barely a step below lethal force. Done right, no can Defense, and it fucks people up. Permanent.
Did that adequately answer your question? (Better to show an example of each, but I don’t have any willing participants to make a YouTube video.)
You can get much more of what you want with a kind word and a gun, than with a kind word alone.
I'd have preferred the YouTube video but actors are such pansies these days. Casting would have taken weeks. Great explanation, thank you.