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Posted: 9/15/2004 8:47:56 PM EDT
[Last Edit: 9/15/2004 8:49:08 PM EDT by Forest]
I have a MRF-R on my A4gery and I'm going to move the sling from the front sight to the free float tube.

I noticed the tube has holes drilled in the rails occasionally. I'm guessing these are some sort of mounting point? Perhaps it could be used for a sling swivel?

If so is there a specific sling swivel to use for it or will the 'standard' ones work?

Thanks!
Link Posted: 9/15/2004 9:59:12 PM EDT
I would like to know as well.
Link Posted: 9/16/2004 1:05:49 AM EDT
A standard sling stud should work just fine.

-Cap'n
Link Posted: 9/16/2004 3:45:57 AM EDT
No, the hole is larger than a standard sling swivel.
Link Posted: 9/16/2004 9:14:24 AM EDT
I thought something like this is mentioned in the instructions that come w/the MRFs, no?
Link Posted: 9/16/2004 9:29:17 AM EDT
What are those holes for?
Link Posted: 9/16/2004 9:32:52 AM EDT
They're speed holes.
Link Posted: 9/16/2004 10:01:40 AM EDT

Originally Posted By demilios4:
I thought something like this is mentioned in the instructions that come w/the MRFs, no?


What instructions? The only instructions I've seen are the pdf files on Troy's web site that tell how to install it and they don't mention the other holes at all.
Link Posted: 9/16/2004 10:56:52 AM EDT
I called Troy and ask if they sell a sling stud for the holes.They told me not at this time, but they are considering it.They also told me what size but i forgot.I am no help.
Link Posted: 9/16/2004 1:41:38 PM EDT
Huh, I thought they were the same holes as the KAC and SIR...

-Cap'n
Link Posted: 9/16/2004 1:50:23 PM EDT
More pieces in the puzzle.

My MRP has such hole.

PRI sells a top rail for their tubes with hole and advertises them as "ARMS compatible"

???
Link Posted: 9/16/2004 3:14:20 PM EDT
SMGLee? Wes? Grant? Cory? Surely one of you must know.
Link Posted: 9/27/2004 12:18:27 PM EDT
The ones on the top are likely there to connect to one of these:

.... as seen on SPRs.

At least two machine screws come down through the rail to pull them together.

-z
Link Posted: 9/27/2004 1:18:59 PM EDT

Originally Posted By Zak-Smith:
The ones on the top are likely there to connect to one of these:
www.pri-mounts.com/acart/picserve.cgi?picserve=/02-300-PEQ_SMALL.JPG
.... as seen on SPRs.

At least two machine screws come down through the rail to pull them together.

-z



If I see that correctly it is some kind of rail?

Why would the mil spec rails require a riser rail?
Link Posted: 9/27/2004 1:21:31 PM EDT
Umm,

Link Posted: 9/27/2004 1:39:09 PM EDT
Are you talking about the holes that looked like they are threaded?
Link Posted: 9/27/2004 1:41:27 PM EDT
The threaded holes that go into lots of rail systems. The top rail on my PRI handguards has some similar holes, which are for the ARMS SPR rail. I don't know if the other rail systems have them for the same reason or not.

-z
Link Posted: 9/27/2004 1:42:50 PM EDT

Originally Posted By Zak-Smith:
Umm,
www.demigod.org/~zak/DigiCam/ITRC-2004/medium/135_3503_img-b.jpg


Thanks Zak, however that wouldn't work on an MRF. Looking at the picture it looks like that rail steps down 3 times to match the contour of the carbon fiber handguard.

The MRF matches up to the rail on the upper.


Are you talking about the holes that looked like they are threaded?


Those would be the ones...
Link Posted: 9/27/2004 5:16:36 PM EDT

Originally Posted By Forest:

Originally Posted By Zak-Smith:
Umm,
www.demigod.org/~zak/DigiCam/ITRC-2004/medium/135_3503_img-b.jpg


Thanks Zak, however that wouldn't work on an MRF. Looking at the picture it looks like that rail steps down 3 times to match the contour of the carbon fiber handguard.

The MRF matches up to the rail on the upper.




Yeah, I would think there would be zero use for an SPR rail on a TROY system, since the TROY is similar to the URXII ( continuous rail ).
Link Posted: 9/27/2004 5:35:31 PM EDT
[Last Edit: 9/27/2004 5:45:26 PM EDT by M4-Shooter]
here is my rasII the stud is from a uncle mikes ar-15 sling kit the stud is 1/4-20.
Link Posted: 9/27/2004 10:50:36 PM EDT
Could it be for the ARMS #35 "Track Mount" rings that screw directly into the threaded holes of other ARMS products?

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