I can't fault you for trying to change it to suit you. But, I had a gun that was much the same. It was an SKB 200E, 20 gauge. I didn't care for it, even though I shot it well. Killed my first two Gambel's quail with it. Never could get past the bt forend, which looked so much like yours. Swapped it, and some boot, for a 20 SW Ejector. Really good move for me. Love the Sterly 20.

May God bless America and those who defend her.