Benelli m4 for left hander

[snackgunner]

Was thinking of getting a Benelli m4 sku-11707

Is anybody that has one wrong handed? With the ejection port being on the right hand side, does the shells flying out the right side get in the way interfere with firing the gun to your full potential?

I remember shooting the m249 saw while in the Marines standing up and I'd get bruises on my right bicep from all the brass. I realize they're two different weapon systems but was just curious

I just stopped in at a local shop and saw they had a left handed shotgun a benelli SBEII(2)
Didn't realize benelli made left handed shotgun

Or do most left handed guys shoot standard shotguns?