AR-15 KAC RAS 4rail fitment question

javi_sti

February 11, 2009 23:44

Can a Knight Arms rails system that measures 12" in lenght be fitted into a 16" barrel? If so, how? What parts do I need? Thank you!

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  Nwcid

  February 12, 2009 06:27

  It depends. If I understand correctly you have a set of rifle length hand guards and want to use them on a carbine length gun. Is that correct?
  
  I think they make a few different mountings. If the rails are free floating (only mount at the barrel nut) you can do it. If they are 2 piece guards or require a front mounting point I am not aware of a way to do it.
  
  If they are free floating you can remove the front sight/gas block and replace it with low profile gas block that is sold by many companies. This will mean you need to either add a rail mount front sight to the rails or have an optic of some kind.
  
  Here is an example of a 16" gun with rifle length hand guards and a PRI low profile gas block. It is a .300 Whisper that I am working on building.
  
  

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  javi_sti

  February 13, 2009 18:37

  Thank you! Very helpful answer

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