Geez, I told Peorth to use the Art Request page, and here I am, doing his bidding like the slave I was, anyway!
But let’s set that aside. I completed the “order” as requested: an adult Triela from Gunslinger Girl, donning mafia clothes (fedora hat, and a coat, even though I thought shades would make her look more badass… generic…)
The hat tends to cover enough hair as to not make her look like Triela (even with the references). Enough reason for me to remove the shades, really.
The gun is an 1878 Colt Double Barrel Shotgun, with the barrels sawed off to shorten. The stock? Oh, that. Didn’t show up when I drew the crooked elbow, so no stock. The width’s not thicker than a human arm. That should clear things out.
Archived in the Gallery now. A break from people asking me to draw may be in order. Whew!
*whipcrack*
Looks awesome, mate 
*hnnngghhhh*
Glad you liked it.
Also, keep the Hisao heart attacks at the minimum.