I am an idiot.
So.
I'm telling a group of guys not to pull the trigger when then upper is off and "CLICK!!!". I pulled the trigger thinking the safety was on and away flew my large paddle off the bolt catch.
Made me mad. But my fault, and I have spares. The lower is a factory assembled unfired new one.
So.
Today I'm at home trying to tap out the roll pin to swap out the bolt catch. I've rebuilt and assembled ARs for years. I start tapping, meet some resistance, and whack the heck out of the punch. I see what I thought was a scratch on the receiver. I get mad, but don't realize that the punch is inside the receiver hole, so there's no way that's a scratch dummy, it was a crack. So I whack the punch again and...
So.
After the wife comes running to see if I've broken a body part as I'm screaming very loud after she heard me hammering, I have a beer. I take some pictures. Have another beer or three, and start posting. I like to think I know alot about our favorite weapon system. I've never seen this.
Can't think of how to fix it. Could I weld or JB Weld some goo onto it after driving in the roll pin? Just sorta stuck with a lower that won't catch or lock the BCG?
I am an idiot.