No one is comfortable in this situation (although Ben is unarguably the most comfortable). Isn't it beautiful?

Just one shot? He deflects it easily and looks at Han, thinks about telling him that there's no need to hold back, especially since the blaster's only on stun. His father must know that, though. The hesitation has nothing to do with logic and everything to do with emotion. It's understandable.

He glances over at Rey to see how deeply unpleasant this is for her. She did try very hard to shoot him.