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[ARCHIVED THREAD] - Knights RAS install

Posted: 8/31/2007 3:44:02 PM EDT

I'm adding the Knights RAS on my 6920. Never installed them before, no instructions. The top piece has the "arrow towards front" marking, how does the bottom piece install? Didn't see any obvious markings saying which way points forward. This is the "no gunsmithing needed" model.

Thanks in advance.

Posted: 8/31/2007 4:02:42 PM EDT

[#1]

Try this RAS Install

I found this very helpful when I installed mine, Good luck.

Posted: 8/31/2007 4:17:46 PM EDT

[#2]

Thanks, I just bought one on EE and needed this also.

Posted: 8/31/2007 4:23:46 PM EDT

[#3]

Quoted:
Try this RAS Install

I found this very helpful when I installed mine, Good luck.

Yup - I used this too and even managed to get mine installed properly!

Posted: 8/31/2007 7:41:36 PM EDT

[#4]

Perfect, thank you very much!

Posted: 8/31/2007 7:44:49 PM EDT

[#5]

will they fit on a heavy barrel?

Posted: 8/31/2007 8:33:40 PM EDT

[#6]

I would think so.

Posted: 9/1/2007 4:56:33 AM EDT

[#7]

Quoted:
will they fit on a heavy barrel?

They should, but I think there is an oddball case out there that won't fit.
I had a Bushy HBAR and the M5 fit on mine.

Posted: 9/1/2007 5:09:48 AM EDT

[#8]

The RAS is designed to fit Government M4 profile barrels. For a heavy barrel, you should get the RIS.

Posted: 9/1/2007 5:12:34 AM EDT

[#9]

Yep, did mine.

Quoted:
will they fit on a heavy barrel?

Posted: 9/1/2007 11:56:08 AM EDT

[#10]

Just got done putting on the RAS. With those instructions took all of oh, maybe 4 minutes-hey I was watching some college football on TV.

Thank you again, really appreciate it.

Edit to add that whatever barrel the 6920 comes with, the RAS it perfectly.

Posted: 9/1/2007 12:00:35 PM EDT

[#11]

Quoted:
The RAS is designed to fit Government M4 profile barrels. For a heavy barrel, you should get the RIS.

My M4 RAS fits on my Colt SOCOM barrel without issue.

Posted: 9/1/2007 12:12:20 PM EDT

[#12]

Quoted:
will they fit on a heavy barrel?

They fit on my hbar's as well.

Posted: 9/1/2007 12:26:37 PM EDT

[#13]

I cant ever remember the difference between the RAS and RIS but the one I have is the same that the Army issues and I have had mine on a Bushmaster Hbar before with no problem.

Posted: 9/1/2007 1:48:31 PM EDT

[#14]

The RAS (younger bro) clamps to barrel nut where as the RIS (older bro) is secured via the delta ring like any other two piece rail system. Incidentally, the T-numbers differ between the two as well.

Posted: 9/1/2007 2:54:36 PM EDT

[#15]

Ok, cool.... I got the RAS then. I will try to remember that.

Posted: 9/1/2007 8:33:34 PM EDT

[#16]

Quoted:
will they fit on a heavy barrel?

Yep, I have one on my LMT M4 govt profile and ran into a small problem when putting one on my RRA Entry Tactial. Nothing that a dremel didn't fix. Had to shave a little off to get it to fit.

Posted: 9/5/2007 7:31:33 PM EDT

[#17]

BTT so I can find it.

Posted: 9/19/2007 12:47:17 PM EDT

[#18]

Quoted:

Quoted:
will they fit on a heavy barrel?

They fit on my hbar's as well.

+1 My RAS fits just fine on my Bushy 16" HBAR

[ARCHIVED THREAD] - Knights RAS install

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[ARCHIVED THREAD] - Knights RAS install

[ARCHIVED THREAD] - Knights RAS install