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Posted: 10/10/2016 11:38:28 PM EDT
I bought this Spartan 9mm side charger upper w/ LRBHO. As expected, it's wider in certain dimensions that a mil-spec upper. http://www.joeboboutfitters.com/Spartan_9MM_45ACP_Non_Reciprocating_Side_Charge_Bi_p/jb-9-non-recip-lrbho.htm
The upper does have a couple small areas cut out for some rail anti-rotation tabs, but certainly not all would fit. Does anyone know which 8-9" M-Lok rails are compatible with this upper? |
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Posted: 10/10/2016 11:48:18 PM EDT
[#1]
Tagged
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Posted: 10/19/2016 12:13:27 AM EDT
[#2]
I paired my side charging upper from Rousch Sports to the Faxon rail and did not realize that the anti rotation tabs would be an issue until it was too late. I ended up taking the tabs off with a dremel and you'll never be able to tell by looking at it. I'll post a few images below.
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Posted: 10/22/2016 12:51:11 PM EDT
[#3]
I had to mill the tabs on a ALG rail to fit a billet upper I used on a 5.56 rifle. I didn't have to completly remove the tabs. Just made them more narrow and a little thinner. A file and Dremel did the trick in just a short time.
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Posted: 10/25/2016 12:19:07 AM EDT
[#4]
Ran into the same issue on my build...URX 4 was the answer. In fact, I liked the rail so much I put them on all my builds.
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