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Ar-15 lower

899 Views 1 Reply 2 Participants Last post by  woodstock
bought an AR-15 lower for an old barrel that I had laying around and the attaching hole in the front is smaller than the one in the front of my upper receiver , is there a bushing for that or what?
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Is that a colt upper by chance? If so there is a bushing that will make that work.
You can also have the lower drilled out to take the large pin for a more permanent fix.
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