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AR15.COM
12/6/2014 4:25:53 PM EDT
I read the fitment link but still a little confused.  I want to build a new upper with a fixed FSB and use the Fortis 9 inch FSB cutout rail.  I want to use an AE can/brake/collar.  Can I get away with using a 11.5 barrel or do I need to go 12.5 to avoid fitment issues?  The upper pictured on your webpage with the DD 9.5 FSB looks perfect. https://www.adcofirearms.com/itemdetails.cfm?inventorynumber=1572

Also, can we get AE to make a M4-S sized can?  He could call it the AEM1! :)
12/8/2014 7:11:48 PM EDT
[#1]
That's a 12.5" barrel in the picture.

here is a good link to what fits.

https://www.adcofirearms.com/acc/aefit.cfm