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-   -   Rear sight thread size (https://www.rimfirecentral.com/forums/showthread.php?t=289959)

Kevin6q 07-13-2009 06:15 AM

Rear sight thread size
 
Anyone know the threads for the diopter on the rear sight? I need to find a tap to clean the threads.

Charlotte 07-13-2009 10:04 AM

If you are talking about the rear sight on the CM-2 the thread size is 9x1.

Kevin6q 07-13-2009 02:37 PM

It's actually my 7-4 but they use the same parts. Thanks very much. Kevin

aom22 07-13-2009 06:41 PM

Rear Sight Thread Specification
 
Quote:

Originally Posted by Charlotte (Post 2477596)
If you are talking about the rear sight on the CM-2 the thread size is 9x1.

Good information Charlotte.

Rear irises
Quote:

I could bring the threads of the Iris down to the 9 x 1 threads of the Izhmash sight,
but that means the sight can only be used on the cm-2.

aom22 07-13-2009 06:49 PM

Aftermarket Izhmash Diopter & Aperture
 
Kevin6q ... have you seen this thread?

Izhmash BI-7-4 & BI-7-3: Adjustable Diopter Iris & Adjustable Front Aperture
Quote:

The following post was the impetus for this thread:
Quote:

Originally Posted by Eastside Ptarmigan (Post 2344288)
Was looking at some biathalon stocks online....
when I came across an Izhmash Adjustable Iris at Larsen Biathalon.

Izhmash Iris

Their North American Distributor is http://www.altiusguns.com
I haven't called them to see if they have them but if anyone does they would.

http://i84.photobucket.com/albums/k2...IUS/altius.jpg
Larsen Biathlon Dealer
http://i84.photobucket.com/albums/k2...arsen_tiny.jpg
Iris for Izhmash Diopter
http://i84.photobucket.com/albums/k2...ure/th_766.jpg
Special Designed Adjustbalbe Front Aperture
http://i84.photobucket.com/albums/k2...ure/th_875.jpg
Quote:

Adjustable from 1,8-4,3mm
Ring width: 1,6mm
Fits all front sights from IZHMASH
Adjustable Front sight rings
http://i84.photobucket.com/albums/k2...ure/th_873.jpg http://i84.photobucket.com/albums/k2...ure/th_879.jpg



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