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chuck1
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Posted: 12/13/2011 2:35:58 PM

THE IMAGE ABOVE IS A PAID ADVERTISEMENT
Does anyone know the inside diameter of a 13 inch troy alpha rail? I have a project in mind but need to know the ID to see if that rail will work. Thanks much.
jmarkma
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Posted: 12/14/2011 7:15:29 AM
[Last Edit: 12/14/2011 7:31:09 AM by jmarkma]
1.385"

If you add any rails the ID will be reduced due to to the bar that the rails thread onto.

ETA: Mine has the front sight though I don't think that makes a difference.
chuck1
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Posted: 12/14/2011 12:14:31 PM
Thank you for the info. Looks like everything should fit.