acgeorge Posted August 20, 2017 Report Share Posted August 20, 2017 Rock River Arms 308 Top Rail Octagonal Handguard Standard length #308A0010TRB. See it at RRA: RRA TRO Handguard I was able to get a measurement of the difference in height of the handguard rail to the DPMS upper receiver rail. I measure the handguard rail to be .060" higher than the upper rail. My DPMS upper rail measures .150 thick. So, I would feel safe to say, the handguard rail is for a high profile upper (.210") with a 1-7/16 - 18tpi $75 shipped, payment by USPS Money Order, or Paypal Gift Take a look at the pictures and ask any questions Link to comment Share on other sites More sharing options...
acgeorge Posted September 23, 2017 Author Report Share Posted September 23, 2017 SOLD Thanks Link to comment Share on other sites More sharing options...
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