I'm left-eye dominant.
Shoot a handgun right handed but move it a bit so it lines up with the left eye.
Shoot a rifle/shotgun left handed. Have to reach over if it's a bolt-action.
First AR15 had a coiled snake on the side, don't remember the name.
Second AR15 was a Stag Arms. Ordered a left-hand version. Had nothing but trouble with it and sold it. Then decided I didn't like AR15s. Would rather have a Mini-14 or an SKS.

Enough of this, tell me about the Glock 43. Is it a single stack? Bigger or smaller than the Shield 9? I am familiar with Glocks, was required to carry one as a duty weapon. Carried G17, G19, G21. I don't think the G43 had come out back then.