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Yes, with three posts inside a circle. Here's a thread we had years ago showing pics that survived... Also I'll carry the pic here...

https://www.milsurps.com/showthread.php?t=27116

I have about three of the new ones but you don't see the old ones at all. They would have gone out as soon as the slotted flash hider replaced the prong flash hider, the eyes at top would have then...