Ruger MK II Drill & Tap size question for Weaver Scope M

Jose Jimenez · Post by **Jose Jimenez** » Sun Nov 20, 2005 12:23 pm

The drill and tap I have for my Ruger Mark II iron sight is 33 drill and 6-40 tap. I want to drill and tap for a Weaver mount. In looking closely the screws are a little finer thread than the sight screws I have for the fixed iron sights.

The Weaver mount I have is from Weingart Combat Part No. RM2FD. It states on the package that it will fit Ruger "factory drilled and tapped holes". I've looked around and I cannot find what the drill and tap would be for that. In visually comparing my 6-40 tap to the screws that came with the mount it is not a 6-40 tap match.

This is probably a dumb question that everyone knows the answer to already.

What is the drill and tap for Ruger Factory?

David Hineline · Post by **David Hineline** » Sun Nov 20, 2005 6:00 pm

http://www.jackweigand.com/rm2fd.html

I would just remove the rear sight and use Jack's no gunsmithing mount, they work perfect for guns that are not drilled and tapped.

reservoirdog · Post by **reservoirdog** » Tue Nov 22, 2005 10:02 pm

heres a pic of the "no drill" type...very sturdy, no probs at all.

Jose Jimenez · Post by **Jose Jimenez** » Sat Dec 03, 2005 5:30 pm

I think I have found it...

8-40 (scope base) taper

http://www.muzzlecouplings.com/taps_&_dies.htm

Ruger MK II Drill & Tap size question for Weaver Scope M

Ruger MK II Drill & Tap size question for Weaver Scope M

Jack Weigand mounts