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Swapping out handguards on my 9mm AR build - which means new barrel nut, fake gas block, etc. get installed.
Unfortunately, PSA's "round" hand guards aren't so I'm trying to figure out "do I sand/file and make it work or wait until Monday and call PSA and complain about out of spec stuff".
These "round" hand guards are so oval that the front end doesn't fit in the end cap, and the back end is a bear to get into the delta ring retainer thingie...
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