BTW, can anyone that has a Troy Alpha rail measure the inside opening of the rail for me? I think I should have enough clearance but I wasn't able to find those dimensions anywhere.

 

You should be fine Jorge.

 

Here is a pic looking down a LW 14.5 Middy with a BCM lo-pro .625 gas block and Troy 13" VTAC rail.

 

The pic is a little off center but you get the idea, you should be alright with your cut down FSB.

 

Second on the LaRue handguard, I got mine in recently and it looks amazing. Still waiting on my LaRue Stealth Upper though

Second on the LaRue handguard, I got mine in recently and it looks amazing. Still waiting on my LaRue Stealth Upper though

Op needs to use factory barrel nut

DD Omega 9" and leave the FSA alone. In time you won't even see it. The FS being attached to the barrel assures you won't lose zero if the rail gets loose and it is one less thing to do (not having to flip up a front sight) in the event of a RDS failure.

I have a dd omega 7" rail. Completely satisfied n

So I picked up the 13" Alpha rail and installed it over my modified FSB. It fit over it without issue and with space to spare. Install was a breeze and the rail seems extremely solid. Without anything mounted on it, if you drop the BCG you can hear the "tinnnnnng" of it resonating which to me sounds like its mounted really solid. I'll post pics up later.

So I picked up the 13" Alpha rail and installed it over my modified FSB. It fit over it without issue and with space to spare. Install was a breeze and the rail seems extremely solid. Without anything mounted on it, if you drop the BCG you can hear the "tinnnnnng" of it resonating which to me sounds like its mounted really solid. I'll post pics up later.

 

glad to hear the troy is a solid fit. thats what im probably going to end up getting. i just got my upper today ill probably try to cut the fsb this weekend. i guess i should place an order for flip up front and rear sights too. then i just need a stock, reciever end plate, castle nut, buffer spring, buffer and and trigger and ill be ready for the range.

This is how it turned out. Going to shoot it at EFGA this weekend hopefully.

 

Here is an 11" Troy Bravo rail on a different AR. Cutting down the FSB got a lot easier the second time around. Took under 1 hour. Feel free to PM me if anyone needs help doing it.

 

All the cool kids have KeyMod rail systems:

 

Noveske NSR:

Centurion's new CMR seems to be receiving favorable reviews.  It is like a rounder profile URX 3. 

 

http://www.m4carbine.net/showthread.php?t=130407

guess i need the stock barrel nut then...

I believe Samson uses the stock bbl nut with a proprietary dingus that wraps around the nut that interfaces with the rail.     http://www.samson-mfg.com/