I see the URX III’s are starting to show up. Question is are the only spots to attach accessories on the front of the rail?
Is there any way to run a vertical forgrip or a magpul afg?
Assuming no cool rail panels either.
Thanks for any insight.
You could use the magpul moe rails and attach it to the screw holes on the sides and bottom rail. The only caveat is to find the correct sized rail section that has the corresponding measurements for the screw holes on the rail.
There may be other rails options out there that I don’t know about but I’m pretty sure that is how one would attach rails to the URX III.
Got it. That is what I figured. I’m sure there are some low profile screw in rails.
I be someone will also make some rail panels that will fit so you don’t have to grab on to that hot metal!
I have done shooting with the URX II but not sustain mag dump type firing. It gets warm but on the bottom of rail is aluminum type heat shield which does a decent job of protecting your hands.
I am sure the URX III will do just fine or KAC wouldn’t have released it.
URXIII are not Magpul MOE rail compatible.
We have a bolt on URXIII handstop – the user group that desired this rail did not want additional rail space.
I’ve got a URXIII on my SR-25 EMC, and shot a lot of our 5.56mm guns with them, they do get hot when shooting a lot – however gloves help 
After about 8 mags f/a you REALLY need gloves
Does anyone have any customer pics of the URX III on an SR-15?
(Yes, I have seen the ones of Costa… and they are sweet…)
Pictures have been posted here:
http://www.silencertalk.com/forum/viewtopic.php?f=91&t=69662
I should be getting mine within the month as well, hopefully I’ll be able to post some pictures but I think the pictures on ST display the whole layout pretty good.
The 16" AAC 300 Blackout uppers have the 12" KAC URXIII. Very cool rails, I want one to put on my KAC SR15E3 It’ll require trimming down the gas block but I think it would look great.
I’m super contemplating buying three of ‘em and having ‘em chopped to fit an 11.1’’ host + suppressor.
But I’m not sure if it’s worth the money. Also, don’t know what I’d do with the chopped down URX-II’s I have…
Intresting.
So Kevin, if a user wants to add rails sections to the sides or bottom are you saying it’s not possible?
Is there any bolt-on rail section on the market that will work with URX III?
Actually I have already played with these in my shop the Magpul MOE size 7 & 11 rib rail sections will actually line and allow you to mount on the bottom rail but the side would require a long URX side screw(not available). But the 7 & 11 rail sections will work only on the lower rail of the URXIII at this time. Also I have brought this to “3”'s attention so he is aware and looking at coming up with some sort of answer for this. Any news updates will be posted.
I spoke to III, and as Casey said the MOE rails line up, as I tried this at home with my SR-25, but need a modified screw, we will be making these available.
We have some other prototype rail segments as well designs for Military programs – which will transcend to the commercial line up when available.
Knights never ceases to impress me.
Here’s a few (crappy) images of a 7 & 11 rib rail section mounted on the bottom rail.
7 rib
Mounting nut (inside of bottom rail)
11 rib
7 rib and standard hand stop mounted
Just got my URX III today… Very nice… I will be sure and post pics once I get the rifle completed.
Really like the stippled rail ladders above as well…
Got mine today also.
Have to install it later tonight, hopefully I’ll be able to get the delta ring assembly off of my BCM…
One of the reasons I sold my LW URX II is due to the heat and a few other reasons.
Post Tensioned on Silencer Talk is setting his up the way I would if I bought one. He’s has or is going to use the KAC handstop and has drilled KAC rail covers and attached them via screws to the side rails. He’ll be poetic back with how well it works. It appears to be stable as the part of the cover that slides over the rail supports it from shifting in any way since it still connects around the slick rail.
If I would have even thought of that, I may have kept my LW.
If it works well or if they should ever become available, having the option to use the KAC rail covers on the URX III would sell me on them and I’d buy at least the rifle length for one of my SR15’s. Interested to see how guys like the mid length.
In case anyone is interested, here are some pictures of the URX III.
My URX III build… Many thanks to Casey at Lawmens and Robb at VA Arms.
AFG is secured via MOE Polymer rail as demonstrated above by Casey. Thanks for the idea! This one is the 11 slot rail.
It looks great dude! 
I want to replace the URX II with one of these on my KAC SR15E3!