Correct roll pin (Mil-spec) for the Leatherwood ART II 3x9 scope rear mount base

Hello,
I have found a Leatherwood ART II 3x9 rifle scope for my Springfield M1A.
However, I ran into a problem:
The little roll pin to secure the rear rail mount base is missing. I have been told it holds the measure 3/32"x9/16".

When I say the rear rail mount base for the rifle scope, it is the part that substitute the clip guide on the M1A

I found the roll pin for the M1A clip guide at Brownells. However it holdes the measure 3/32" x 5/8", and I suspect it is a bit too long.

Can anybody help me with the correct roll pin for the rear rail mount base for the rifle scope?

Thank you in advance,

Cordially,
Anders

Note: http://www.strandholm.dk/transit/pho...lery/perII.png

According to TM 9-1005-223-34 the NSN for the 3/32 x 9/16 pin you want is 5315-00-051-8636. That is the same as MS16562-120. Manroy Engineering Ltd says their A20504 is equivalent.

A bit too long can be fixed with a file or a fine grinding wheel. The difference is 62.5 thou(as in .0625"). A lot will depend on what tools you own.
Mind you, 3/32" x 9/16" is a 'standard' size for roll pins. There a fastener company near you?

Thanks Old Tanker and Sunray,
I was fortunate to find the correct roll pin and got my ART II mounted.
Should you come across the fiber scope cn I ould be most interested.
Thanks,
Anders