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Posted: 4/21/2016 5:15:16 PM EDT
[#1]
I think you should go with a 10".
(I suggest you read your post again) Rails get hot, and tucking suppressors inside of them limits your options for both rails (due to ID) and suppressors (due to some having a locking mechanism you'll need to manipulate). |
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Posted: 4/21/2016 5:27:00 PM EDT
[#2]
I enjoy my 9.5" Geissle MK8 with 11.5" ballistic advantage barrel and Gemtech Trek
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Posted: 4/21/2016 5:30:41 PM EDT
[#3]
Thanks for the catch on my post BigWaylon. Changed it, options are:
10" rail with suppressor exposed.....or 12"-13" rail with a portion of the suppressor covered |
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Posted: 4/21/2016 5:44:31 PM EDT
[#4]
Quote HistoryQuoted:
Thanks for the catch on my post BigWaylon. Changed it, options are: 10" rail with suppressor exposed.....or 12"-13" rail with a portion of the suppressor covered Definitely suppressor exposed. I don't know what kind of can or mounting system you have, but usually, the can would live on the rifle if you were going to run it under the handguard. That, or some kind of flash can. Being that cans are expensive, I have .308 cans that I swap around between x39, 5.56 and .308, so having the rail behind the can is good for me. Plus, you can get thinner and lighter rails going this route :P. For something like my 4.5" .22, where all rounds are subsonic, leaving the can under a handguard is fine since I have no interest in shooting it unsuppressed. |
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Posted: 4/21/2016 5:48:47 PM EDT
[#5]
I recommend against a 5.56 can under a rail. It gets very hot.
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Posted: 4/21/2016 5:59:42 PM EDT
[#6]
I like a rail that's 1.5" shorter than the barrel. You end up with about 0.5" of barrel exposed, and it looks really nice.
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Posted: 4/21/2016 6:04:41 PM EDT
[#7]
I used an 11.5" barrel with an 11" rail. I like the near seamless look.
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Posted: 4/21/2016 6:06:12 PM EDT
[#8]
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Posted: 4/21/2016 6:17:09 PM EDT
[#9]
I shoot for about 1" to 1.5" difference between rail and barrel length to get a nice rail to can fit without interference.
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Posted: 4/21/2016 6:23:34 PM EDT
[#10]
One manufacturer's (x) length rail is not always the same as another, try and get specific specs if possible. I bought an Aero precision 12" rail that ended up being closer to 13" and had to modify my build plans because of it. I have a small portion of the suppressor inside the rail and I bought a direct thread can for this. This rifle has a dedicated can so it does not bother me. I haven't fired more than a full mag at a time but the heat hasn't bothered me yet.
Here is a comparison pic for reference. The top is a 10.3" Ballistic Advantage 300blk barrel with a Geissele 9.5" MK4 with a SiCo flash suppressor and Omega can. The bottom is a 12" Larue Stealth barrel with a direct threaded Griffin Spartan 3 and Aero Precision 12" rail that was more like 12.6-12.7". The Aero rail has a 1.8" ID so it has the room to have the can inside. Most manufacturers do not recommend running a can under a hand guard and I would not do it if it were more than what I am covering. 
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Posted: 4/21/2016 8:35:44 PM EDT
[#11]
For reference, here is a 12" LaRue Stealth barrel and a SLR 11" Solo Ultra Lite EX M-LOK Handguard with an Omega Thread On:
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Posted: 4/21/2016 9:39:55 PM EDT
[#12]
Thanks all. Decided to go with a 10 or 10.5" rail to have the suppressor outside the rail. Reduce rail heat and make it more accessible. I have a Kestrel direct thread so should make it a pretty seamless look using a slimmer rail which I prefer.
Nice pics by the way, some great rifles there! |
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Posted: 4/21/2016 10:06:16 PM EDT
[#13]
10" SLR rail with an 11.5" Ballistic Advantage barrel. |
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Posted: 4/22/2016 3:09:30 AM EDT
[#15]
9" or 10"
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Posted: 4/22/2016 6:06:19 AM EDT
[#16]
10.5 or 10.75.
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