Which rail for bcm 11.5" build - dd ris II or kac urx II

General Firearms NFA
1

Which rail would you use and why? Kac urxII OR MK18 rail?

2

I really like my URX II on one of my 11.5s, I also really like my Centurion Arms C4 rail on my 11.5 duty upper. Obviously my duty upper is my most favorite… or it wouldn’t be on my duty weapon.

3

I’d use the KAC URX II for an 11.5’‘, and a DD RIS II for a 10.3’'.

Centurion is a good suggestion too though. But I prefer KAC.

4

Thanks fellas. I was leaning towards the kac. I have a ris II M4 rail on my middy and really like it a lot but I like the fact of the kac being longer and having a built in front sight.

Stick - have you had any problems with barrel nut loosening

5

Not what you asked but I would give the 10" Centurion a look as well.