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AR15.COM
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8/7/2012 3:12:14 PM EDT
Hey fellas I'm kinda noob.  I've been looking for a mk12 barrel with the collar and all and have not able to find one. Does anyone know where to get one or do they come in pieces that need to be assembled.
8/7/2012 3:19:25 PM EDT
[#1]
Adco Firearms sells the barrel/brake/collar together.



What the hell is with the MK 12 threads?
8/7/2012 3:40:53 PM EDT
[#2]
You'll need to buy the SPR profile barrel and have the brake-collar installed
8/7/2012 4:03:50 PM EDT
[#3]
Might look here... (from an earlier thread)

http://highcalibersales.com/
8/7/2012 5:03:50 PM EDT
[#4]
The collar is a seperate part from the barrel and has a set screw on the bottom of it.
As long as the barrel has the step for it you just slide it on and tighten it up.
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