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AR15.COM
1/31/2011 5:49:47 PM EDT
what is the shortest barrel length that will fit this rail? any pics would be awesome!
2/1/2011 4:15:53 PM EDT
[#1]
It depends on what you want?  The rail itself is slightly longer than 12". If your not planning on using a suppressor and don't mind if the flash hider is not fully exposed then a 12.5" barrel is the one. If your thinking of using a suppressor then you need to save about 1.5 to 2 inches behind the flash hider depending on the manufacture you choose. If you want your flash hider fully exsposed well, the length is gonna depend on the manufacturer and specific hider you use. But you can count on at least 1.5".
2/1/2011 7:20:19 PM EDT
[#2]
i am looking at doing a mk18-ish build, but with slightly more rail and barrel, the same look you get with a mk18 ris ii and a 10.3 barrel is what im looking for, but with the longer rail
2/2/2011 8:23:05 AM EDT
[#3]
Quoted:
i am looking at doing a mk18-ish build, but with slightly more rail and barrel, the same look you get with a mk18 ris ii and a 10.3 barrel is what im looking for, but with the longer rail


To get the exact look you will need a 13.3" barrel. Best bet would be to get a DD 14.5" and have it cut down to those specs.

Here is a pic showing a 14.5 with a M4A1 rail.  The "bare area" of the barrell from the end of the rail to the start of the FH is approx 1.25"