Hey all- Going to pick up a Norc commercial today and it's missing the bayonet. I plan on putting one back on it because it looks goofy to me without the bayonet. But, I've noticed some are held in place with a rivet and some with a screw. Does it matter which I put on it (functionally) or is there a way to identify which would be the correct bayonet attachment hardware? Otherwise, I'll just put a screw-type bayonet on and be done with it. Thanks!