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Posted: 9/28/2010 10:45:17 AM EDT
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I just got a new (used) AR15, it was a police trade in back in the 90's and I was looking to see if I could identify the upper.
It's a keyhole flat top receiver 11.5" barrel, with fixed 5" flash hider. ––––-Barrel is HBAR under the handguards, and equals out after the fsb ––––-Handguards are slim style, no heat guard A2 FSB is cast, with A1 type round front sight post, with UP printed into the fsb. It looks like the barrel was replaced onto the flat top receiver, so I'm guessing only the barrel and bcg are original. No markings on the barrel at all, I believe the twist is 1:7. I don't know for sure, but did the cleaning rod technique several times, and every time it came between 7 and 7.5" |
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