Larue Rail question

righttoown · June 30, 2007, 9:29pm

I have a RRA Entry Tactical with the 16" R-4 barrel profile. I have decided on a Larue FF rail but I wanted to know if I went with the 9.0 would the factory front sight still fit on it or should I just go with the 7.0. I would like to put a tango down grip and a light on it. I am open for ideas.

Robb_Jensen · June 30, 2007, 9:42pm

9.0 is for a midlength with FSB, 7.0 is for carbine (i.e. Colt M4) with FSB.

BushmasterFanBoy · June 30, 2007, 10:03pm

You could go with a low profile gas block and a set of rail mounted sights. (If you bought the 9in, that is.)

righttoown · June 30, 2007, 10:21pm

I don’t mean to sound dum but what does FS stand for.

Thanks for the help

righttoown · June 30, 2007, 10:22pm

Sorry I meant FSB

R.D · June 30, 2007, 11:09pm

FSB=front sight base

righttoown · July 1, 2007, 2:17am

So if I am understanding right if I want to use a Larue FF rail and keep my orgnial front sight I would have to use the 7.0?

Thanks for your help

rob_s · July 1, 2007, 2:20am

That is correct.

Or, you could use the Daniel Defense 9.5 FSP, but that is not what you asked about.

righttoown · July 1, 2007, 2:34am

Thanks for the information. I did look at the Daniel Defense 9.5 but I still like the Larue better. It looks like I could get a Tango down grip and a light on the 7.0.