I'm pretty sure its either doing iron sights and/or auto aim like old school RE --- Check my quote to learn how Link holds so many items "I've never in my life wanted to punch a girl like I want to right now" Light Yagami
It would actually be kind of cool if you had to learn to aim without the laser pointer.
However, I think they should drop the merchant system and opt for a "parts" upgrade system like old REs which could include laser pointers, stocks, scopes etc. that can be found and attached to your gun. --- Remember... if it's slightly complicated, there is a wikia for it.