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9/6/2014 9:30:24 PM EDT
How hard is it to swap rails, if I already have a low profile gas block? I want to get either a bcm kmr rail or a troy alpha to replace my RRA trx rail. I don't have any of those fancy tools for AR's, and I honestly don't want to buy any right now.
9/6/2014 9:33:27 PM EDT
[#1]
If your rra trx rail uses the standard barrel nut the troy alpha will be the best because you'll just swap them. KMR requires you to change barrel nut.
9/6/2014 9:35:33 PM EDT
[#2]
Your gas block is going to have to come off, along with your gas tube and  barrel nut. Most free floats use their own proprietary barrel nut although some use the standard nut. If you buy something that uses the standard nut, then it's just a rail swap. They also usually come with the wrench to tighten down the nut, but you aren't going to get around having an upper vise or reaction rod and a torque wrench.

Your other option would be to buy the rail you want and find somebody who can help you make the swap, or send to somebody like ADCO to do it for you.
9/6/2014 9:38:39 PM EDT
[#3]
So how do I tell if I have the standard one, and how hard is it to take it off? Also what tools are required to switch from each handguard using the same barrel nut?
9/6/2014 9:46:29 PM EDT
[#4]
Thanks guys. I've got a vice and torque wrench, so is this all I'm gonna need besides some punches and other common tools? If it ends up being too bad, I'll just take it to the lgs and let them do it.
9/6/2014 10:06:57 PM EDT
[#5]
I'd honestly just google your current rail and see what barrel nut it lists. I'm far from a gunsmith but the tools you listed seem like the ones you would need. If you want to make sure you could jump over to the gunsmithing section.
9/6/2014 11:13:51 PM EDT
[#6]
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