Warning

 

Close
Confirm Action

Are you sure you wish to do this?

Cancel Confirm
AR15.COM
AR Sponsor
4/27/2017 3:38:47 AM EDT
Has anyone ever installed a free float tube and the proprietary barrel nut doesn't fit entirely into the upper receiver?  The rail itself seats fine, but there is definitely a gap.  





The manufacturer assured me it was OK to run it like this, but I'm a little skeptical.  

Thanks for your help!
4/27/2017 3:51:23 AM EDT
[#1]
It looks fine, now go out and shoot it....

When I was into long range match shooting, I thought those guys were obsessive!

4/27/2017 7:58:56 AM EDT
[#2]
With that style of barrel nut there has to be some gap to compensate for differences in uppers. Although I am surprised they did not use a shim kit if it could not be tighten to the proper spec. Still looks good on,as said go out and shoot it.
4/27/2017 4:13:47 PM EDT
[#3]
Not obsessive, just want to make sure she's good to go.

Thanks for your input!

Bud
4/27/2017 4:31:08 PM EDT
[#4]
GI barrel nut will be like this. If you want a continuous rail system you need to switch companies.
4/27/2017 4:44:37 PM EDT
[#5]
Quote History
Quoted:
GI barrel nut will be like this. If you want a continuous rail system you need to switch companies.
View Quote
That's not a GI nut.


OP:  It's perfectly normal and just a function of the design of that rail's nut.  The rail is fully seated on the nut, and it's top rail also nearly contacts the receiver's upper rail, so it's as far back as it needs to go.  They could have needlessly made the "teeth" area of the nut longer to fill that space, but it would add nothing but weight.
AR Sponsor