tbns89 0 Posted July 23, 2012 Report Share Posted July 23, 2012 Hello everyone, I've been trying to find the difference between the S-12 and S-20 gas block and from what I can find all the internal parts are the same. But are the barrel OD's where the gas block presses on the same? Can someone measure the barrel OD (or block ID) on a saiga 20 for me? If there is a difference, could a saiga 20 block be reamed out to 23mm (for the saiga 12)? From the pictures I could find it at least looks like they used the same casting for both models, so I would assume it could be made to work. Thanks Quote Link to post Share on other sites
tbns89 0 Posted July 23, 2012 Author Report Share Posted July 23, 2012 Found the measurment, looks like it won't work. Does anyone have a S-12 gas block they would be willing to part with? Quote Link to post Share on other sites
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