Hello Jerry, my apologies for not getting back to you sooner, I've been having health issues and been out of town. I measured the front sight housing and it measures at .435 I.D. I looked at GPC and they picture several different styles but they are all out of stock. Looks like 3 tabs located at 9, 12, and 3 with the ones at 9 and three being a little bit wider.
Thanks,
Chris O.
