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Old April 30, 2019, 08:39 AM   #2
zukiphile
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Join Date: December 13, 2005
Posts: 3,669
I've bought slotted free float tubes on ebay with a big aluminium barrel nut onto which the handguard threads. They are strong and the slots allow mounting of bits of picatinny rail and paracord for sling attachment.
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