Hi there everyone. I'm a new G19 Gen 4 owner but had a question. I ordered a Magpul GL enhanced magwell for the gen 4 but received a gen 3 instead. Don't know how much of a difference it is from the gen 4 but when I put it in it was a bit snug but I dont see any issues. Haven't shot it but would there be any problems if I keep it? Thanks in advance.