Might be a little ejector piece. That broke on a .22 auto. I have the part but just can't get it into the right place. Probably need a gunsmith. My favorites are at or past 100, but still fun to shoot. That, and they often just feel right.

After my Dad passed I bought some guns I had drooled over for decades. A 12ga SS (the ONLY gun for waterfowl) and a .45 LC Single Action. I was looking at a number of them and was almost settled on a Ruger. Then, the dealer handed me the Baretta. It just crawled into my hand and snuggled down. Damn thing just fit. When I was learning to shoot, or fish, the gun/rod was simply and extension of me. The better it "fit", the better it worked.