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AR15.COM
2/28/2012 11:58:52 PM EDT
I've got a M4LEPII that has a K9 rail on it. I'm thinking of going to a Samsom Evolution 7-EX, but it works with a standard barrel nut.  I'm assuming the K9 is not using a standard barrel nut, and has some kind of free float barrel nut, correct?
2/29/2012 4:46:52 PM EDT
[#1]
The K9 has a barrel nut designed for the rail. Not a standard G.I.
2/29/2012 10:20:30 PM EDT
[#2]
Will a standard barrel nut wrench take it off or do I need to find one specific to the K9?

Now I'm wavering between the CMMG Revolution and the Samson Evolution again.

The only real reason I'm leaning toward the Samson 7-EX is because it envelopes the gas block.  Giving me even more purchase up toward the front of the rifle.
3/1/2012 2:36:12 AM EDT
[#3]
I use a standard Armorers wrench that has the two pins on it.
3/1/2012 10:55:39 PM EDT
[#4]
Awesome.  Thanks again.