This is an m4 hop up, but it gives you an idea. I have no experience with the m14 hop up though.
Lone Wolf General
Posts : 2551 Join date : 2008-07-03 Age : 33 Location : Marietta, GA
Subject: Re: How do you put in a tighter barrel? Fri May 01, 2009 5:44 pm
Try this, http://www.mechbox.com/m14/m14-disassembly-agm.html It is a video of how to disassemble the body of the M14. I cannot find a guide on how to remove a barrel but I would imagine that as soon you remove the gearbox, the barrel and hop up should be able to be pulled out going towards the stock.