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8/21/2015 12:17:25 AM EDT
Do you use the same barrel nut for all the mk4 rails? Or is there a different one depending on specific rails?

My friend and I want to swap a mk4 m-lok 9.5 for a mk4 mod 1 rev b 9.5.  One is installed already, 1 is still in the mail.  Thanks
8/21/2015 7:36:32 AM EDT
[#1]
Geissele uses the same barrel nut for all its rails, you can swap any of their rails with ease. I recently did this to change a gun from a MK2 to MK3.
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