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Posted: 1/17/2006 11:27:47 PM EDT
Can someone help me out with a measurement off of a Samson MRFS rail? I need to know the minimum inside diameter of the tube (cross section at the smallest point.) I'm hoping it is large enough for a custom JP gas block (offered by Randall_Rausch of www.ar15barrels.com)

Otherwise, I'll have to use a YHM or PRi tube for my 300x221 build....

Thanks!
Scott
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