

Help identifying part
I took apart my maverick 88 20 gauge that my father gave me as a gift 7-8 off years ago to do some cleaning. And admittedly I think a part fell out and I only noticed next day. I believe it is from the gun due to the metal and wear marks on it. Any help identifying it? I’d rather not give me or my gun issues.
TLDR: I’m 18 haven’t cleaned gun too often. And need help knowing if this’ll cause me to do a Kentucky ballistics.