Bayonet locking ring

[glockshot]

I just got a bayonet for my newly built '73 trapdoor yesterday and I need the locking ring that
holds the bayonet locked on the barrel.My bayonet has the small pin as opposed to the lug on the 50-70 one I saw.My question is:What is the proper name for this and where would be a good place to look for one ? Thanks....

[Dan Shapiro]

This work for you?

http://www.regtqm.com/Bayonet-Lockin...-p/ori-007.htm

[glockshot]

That looks like what I need.Their website appears to be down.I will call on monday to order.Thanks much for the help..Steve