Are you using the AAC 51t Blackout? It would help if we could see what you are talking about.
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Looking at the bbl on the MK16 CQC on FN's website:
http://www.fnhusa.com/mil/products/f...20&mid=FNM0110
There's a slight gap between the gasblock and the back of the FH, even with a AAC Blackout.
It also says the bbl length is 10".
Yeah there is a gap but mine is more, im using an AAC blackout not the mount version just flash hider. I cant find it but theres a few pictures floating around of a mk16 barrel on a bench without the flash hider and yopu can see how close the threads get the gas block. As is said its not a big deal but if done why not done right? Might as well cut it the the exact same dimensions as the mk16 right? I would love to get a mk16 to compare to my 16s. Does FN measure their barrel from a different point?
Again, pictures would help. You understand that the suppressor mount recesses over the barrel right? Creating a smaller "gap"?
http://www.hi-desertdog.com/index.ph...&productId=384
http://www.hi-desertdog.com/images/u.../scar10mzl.jpg
Looks like 1/2" to me.
Yeah I know mount has bit of an overlap, I wasthinking that might be it. I can't find the pictures, there's two the clearly show the mk16 barrel and the threads end right ate the shoulder were the barrel diameter starts to increase. There was maybe 1/8" of large diameter barrel past the block, then threads. Maybe these were pre production R&D/T/E parts? Any pics of current issued barrels?
Okay, i found a few pictures but nit the ones I wanted. Im starting to think maybe the barrel picture I saw was a prototype barrel. It was had a huge profile under the rail (like 1" big) and the threads I know for sure were much closer than 1/2". Any way noit really a big deal but Im still wanitng to know the exact mk16 barrel specs. Heres some pictures of mine and others....
Mine:
http://i39.photobucket.com/albums/e1...1/2fbc04c0.jpg
mk16 pics:
http://i39.photobucket.com/albums/e1...1/17c72e0b.jpg
http://i39.photobucket.com/albums/e1...1/74b024a5.jpg
http://i39.photobucket.com/albums/e1...1/57763ffc.jpg
http://i39.photobucket.com/albums/e1...1/a25fe751.jpg
http://i39.photobucket.com/albums/e1...1/dc1196f4.jpg
http://i39.photobucket.com/albums/e1...1/e3d77cae.jpg
They look pretty close but we cant base fact off some pictures....
If you put an AAC suppressor mount on your barrel, it will look exactly like the pictures.
That's why the more I think aboutcit the more I think the barrel I'm thinking of is not the production barrel. I remember thinking that that barrel did not leave much room between the muzzle and gas port. At the same time there would be no way to fit a flag hider mount that had a back side offset on it either. I still want to examine a mk16....
Here's another pic of a fellow member here. He had Marvin fo his barrel as well, AAC black out mount.....
http://i39.photobucket.com/albums/e1...1/0f5e1a47.jpg
Here's the CQC Marvin did for me. To be honest, I never even dropped a rod in it to see exactly how long it is.
http://img.photobucket.com/albums/v3...r/DSC00190.jpg