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AR15.COM
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4/19/2014 5:21:35 AM EDT
HELP!  I managed to score a non-chainsaw Gen 2 lower and am buying all the parts for the newest addition to the collection while I am deployed (80 more days!) and am running into a small issue.  I want to use an NSR rail and am trying to find out what upper receivers are compatible with it - I have seen that some have issues due to the anti-rotation pin on the NSR?  I have been looking at the Noveske and VLTOR MURs, and am wondering if the VLTOR is compatible with the NSR, or what other uppers the NSR will work with so I can get all the parts ordered and waiting on my workbench for when I get home.

Thanks for the help
4/19/2014 5:40:48 AM EDT
[#2]
I'm pretty sure the NSR will work with any upper. The anti rotation pin that Noveske uses on their factory rifles is nice but not necessary. I have NSR rails on a few different uppers regular mil-spec, Vltor and a larue stealth.  I never had any problems.
4/19/2014 6:56:37 AM EDT
[#3]
Dude...you RULE!  Thanks for the info...now I don't have to sweat the build so much...and I can focus on FINDING a 13.5 or 15" NSR

Its always nice to find a site that has helpful folks...never would have had the success with reloading and building my wet tumbler if I hadn't found this place...and now I can add my first scratch AR build to the list with help from here...

4/19/2014 9:22:36 AM EDT
[#4]
I have an nsr on my sun devil upper. I don't have the pin installed and have 0 issues.
4/19/2014 7:50:45 PM EDT
[#5]
Have one on an Aero Precision upper with no pin and 0 issues.
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