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AR15.COM
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8/24/2016 5:52:00 PM EDT
Can anyone school me on the difference in the discontinued ps1  vs the newer 2016 model? I do know that the thread pattern on the barrel is different 14 1 left-hand vs 1/2 x 28 but other than that I don't know.
8/24/2016 5:53:44 PM EDT
[#1]
Just went thru this myself-

2016 model changes -
FDE available
Flip up HK style sights
1/2x28 threads.
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