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12/1/2010 1:56:10 PM EDT
I'm new to all the SBR stuff but I heard someone talking about a 7.5 inch barrel not working right if you put a suppressor on it.  I'm sending off for my stamp next week for a can and I plan on building an SBR next I'm just curious to how short I should go with a can attached to the end of it.
12/1/2010 2:50:40 PM EDT
[#1]
Most manufacturers wont warranty a suppressor on anything less than an 11" barrel.  The powder that normally burns up in a 16" rifle doesn't fully burn in a 7.5" barrel, and causes extra wear on the can.  Most people I've seen use 11" or longer barrels.

Try asking here:  Suppressor Thread

Hope this helps.
12/1/2010 3:12:52 PM EDT
[#2]
Buy an OP's M4S from ADCO and don't look back.



12/1/2010 5:01:09 PM EDT
[#3]


Wow! what are the specs for a gun like that?  I would love to build one.
12/1/2010 5:15:09 PM EDT
[#4]
Quoted:


Wow! whart are the specs for a gun like that?  I would love to build one.



Same rifle but with the OP's 16th suppressor installed (they use the same mounting points).



The rifle is the ST Compressor.
12/1/2010 5:16:58 PM EDT
[#5]
Quoted:
I'm new to all the SBR stuff but I heard someone talking about a 7.5 inch barrel not working right if you put a suppressor on it.  I'm sending off for my stamp next week for a can and I plan on building an SBR next I'm just curious to how short I should go with a can attached to the end of it.


I wouldn't go any shorter than 10.3. Most can makers will not warranty their product if used on barrels shorter than 10".
12/2/2010 5:11:17 AM EDT
[#6]
Thanks for the info guys, as much as a 7.5 gun would be with a can I guess I will just go 10.5 or so.  I don't really wanna take the risk of voiding a warranty.
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