DD Omega rail ?'s [Archive] - M4Carbine.net Forums

jhs1969

07-13-08, 18:29

How does the Omega rail free float? It appears from all the research I've done that it expands on the ID of the delta ring. Is this correct? If so, does anyone have any concerns about putting that much pressure on the small surface area on the delta ring's ID lip?

Right now I have a KAC RAS on my LMT, if I keep this set up I will have to go to an offset mount to get my light under my thumb with the vert grip in place. If the Omega works out it would allow me to move my front sling point to the rear of the handgaurd and mount my light directly on the rail on the left side which would work better with my grip.

The Omega seems pretty well liked, again, any issues with it?

twodollarbill

07-13-08, 21:20

It secures itself to the barrel nut.
Pretty slick set-up.
The upper and lower allen head screws tighten down to the front of
the barrel nut and you adjust them to level the Omega Rail.
http://i246.photobucket.com/albums/gg117/twodollarbill/DSC04727.jpg
http://i246.photobucket.com/albums/gg117/twodollarbill/DSC04722.jpg
http://i246.photobucket.com/albums/gg117/twodollarbill/DSC04725.jpg

austinN4

07-13-08, 22:11

What he said. Mine is very secure.

Stickman

07-13-08, 22:28

How does the Omega rail free float? It appears from all the research I've done that it expands on the ID of the delta ring. Is this correct?

The Omega seems pretty well liked, again, any issues with it?

No, it locks onto the barrel nut, not the D-ring. Its well liked, and for good reason, it is very solid, and installation is super easy.

jhs1969

07-14-08, 01:38

Thanks for the replies. I understand now and may end ordering before long. One more question, how will the rail panels off my KAC fit on the Omega? Feel OK in the hand?

Thanks again.

karmapolice

07-14-08, 06:22

KAC rail panels will fit and the rail is super awesome and a comfy rail with the KAC panels.

here is what mine looks like with the KAC panels.

http://farm4.static.flickr.com/3242/2622033747_94330009b0_b.jpg

Henchman

07-14-08, 08:21

IMHO the DD Omega Rail is the best vaule on the market for a ff rail. Instalation is super easy and it is rock solid. The only way that I would use another rail is if I was going to a shaved fsb and wanted a longer mounting surface.

PYRO31888

07-14-08, 21:53

This is what im getting

bufit323

07-15-08, 00:57

Ridge_Runner_5

07-15-08, 03:42

Will the DD Omega Rail clear a piston setup?

bufit323

07-15-08, 09:44

Mine is rotating on me some.

In typical fashion, DD has responded and is helping far beyond what would be considered necessary. GREAT customer service; FYI, all signs point toward a barrel nut issue (which was factory installed and only has a hundred or two hundred rounds down the tube.).

scottryan

07-15-08, 11:27

I wish the slots on the rails were moved so the KAC panels are flush with the ends of the rails.

Between the end of the rail and the first slot, there is too much space.

Stickman

07-15-08, 11:41

Will the DD Omega Rail clear a piston setup?

Depends on the system, but most manufacturers websites or online comments I've read state that the Omega will work.

dsmguy7

07-16-08, 07:11

So the Omega is considered a true free float rail, right?

Robb Jensen

07-16-08, 07:24

So the Omega is considered a true free float rail, right?

Yes. It's truly free floated.

JFPATCH

07-16-08, 23:23

Does anyone know if the 9.0 Omega will be available in FDE?

dsmguy7

07-17-08, 01:55

Robb Jensen

07-17-08, 07:15

Thanks, gotm4. I like the LT, but I don't want to take everything off and have to worry about torquing the barrel and making sure it's all straight. Is the Omega as sturdy as the LT? (Not trying to hijack)

You're comparing a 2pc rail to a 1pc rail when installed the Omega and a LT are very solid with no play whatsoever. The Omega is a fantastic rail which does it's designed job very well. It was designed so that anyone with 10min could install it without expensive tools (i.e. in the field) without having to pull the barrel. The LT just like the DD Lite Rails require more tools etc. I've yet to see any problems with a Omega rail.

bufit323

07-17-08, 13:43

You're comparing a 2pc rail to a 1pc rail when installed the Omega and a LT are very solid with no play whatsoever. The Omega is a fantastic rail which does it's designed job very well. It was designed so that anyone with 10min could install it without expensive tools (i.e. in the field) without having to pull the barrel. The LT just like the DD Lite Rails require more tools etc. I've yet to see any problems with a Omega rail.

According to everything that I have read (and I have spoken to DD about this); the omega is solid enough that during tests, other parts of the gun broke before they could apply enough tourque to rotate the rail. this is of course assuming that you bbl nut is properly installed. The problem that mine is experiencing (which is being investigated right now) is likely a barrel nut problem.

dsmguy7

07-19-08, 06:10

Thanks, guys.

Left Sig

07-20-08, 11:42

I've got an Omega rail on a carbine and it is outstanding. The design is brilliant for a few additional reasons no mentioned yet.

- The oval shape is far more comfortable to hold than any of the "square" rails.
- The bottom rail is "tall" enough to clear the delta ring and upper receiver, which means you can slide off any accessory (usually a vertical grip) from the lower rail without having to remove anything that is in front of it - simple remove the upper from the lower and the accessory slides right off the back. This is a BIG deal, and impossible on many other rails.
- LT style built-in sling swivels on either side of the rail.
- Allows easy installation and removal without re-zeroing if you prefer to use an integrated gas block/flip front sight (GGG, PRI, Vltor, etc.) instead of forearm mounted front sights (Troy, etc.).

Ned Christiansen

07-20-08, 13:25

I have one on a test-bed carbine and it is good stuff.

G-lock

07-20-08, 17:26

I am also looking at the Omega rail and I have a question, I know there is no requirement to remove the handguard cap, but would it hurt anything to dremel it off??

TIA, Jeff

Stickman

07-20-08, 17:29

I am also looking at the Omega rail and I have a question, I know there is no requirement to remove the handguard cap, but would it hurt anything to dremel it off??

TIA, Jeff

It would create an opening for you to play with the barrel nut, and while it wouldn't be the end of the world, I don't see it as an overly good thing.

Its designed to use the full D-ring, I would use the full D-ring.

ETA- Read below as my above post was evidently written in haste, lack of coffee, or both. :)

rob_s

07-20-08, 17:32

It would create an opening for you to play with the barrel nut, and while it wouldn't be the end of the world, I don't see it as an overly good thing.

Its designed to use the full D-ring, I would use the full D-ring.

pssst, he said "cap" nut "nut" ;)

Glock, I don't think there would be any issue with cutting it off, but the Omega is just a tad short and you might see an odd gap between the rail and FSB.

Stickman

07-20-08, 17:41

pssst, he said "cap" nut "nut" ;)

Glock, I don't think there would be any issue with cutting it off, but the Omega is just a tad short and you might see an odd gap between the rail and FSB.

Ahahahahahaahah, thanks for the catch. I'll leave my post as is so others can enjoy it. :D

No issue in taking the handguard cap off, some people believe it will help in cooling, others think it will work like a vacuum and get things inside. I doubt it makes a huge issue either way.

G-lock

07-20-08, 17:54

Thanx for the replies.

I had another thought tho, does the handguard rattle since there would no handguard to put tension it?

Jeff

spamsammich

07-20-08, 18:08

mine does not.

RD62

07-20-08, 18:42

No rattle.

I had no handguard cap on my 16" middy when I put my 9.0 Omega on it. I didn't like the asthetics, and had (a probably unfounded) concern over potential damage to the exposed gas tube, so I put a handguard cap on it. It looks much better now, and I feel better about it.

It'll definately work without the cap, but I prefer it on.

-RD62

PYRO31888

07-21-08, 23:58

I actually never did get these... but ill get them later.

jhs1969

07-23-08, 03:47

what would you guys prefer for rail covers, KAC or the Tango Down covers? The TD is the only other cover that seems to appeal to me. Any differences between the two to be considered?

Stickman

07-23-08, 20:56

I would use the new Magpul XTM covers.

http://stickman.rainierarms.com/galleries/Magpul%20II/IMG_4413%201028%20Stick.jpg

bufit323

07-23-08, 23:11

According to everything that I have read (and I have spoken to DD about this); the omega is solid enough that during tests, other parts of the gun broke before they could apply enough tourque to rotate the rail. this is of course assuming that you bbl nut is properly installed. The problem that mine is experiencing (which is being investigated right now) is likely a barrel nut problem.

I sent my upper to DD on a Tuesday, it cost me $20, I had bought my Omega from a private party, my upper was brand new from a second tier factory. The next Tuesday I had it back and now my Omega is as good as everyone else's . . .solid as a rock... Thanks DD, you do great business!

jhs1969

07-24-08, 00:27

I sent my upper to DD on a Tuesday, it cost me $20, I had bought my Omega from a private party, my upper was brand new from a second tier factory. The next Tuesday I had it back and now my Omega is as good as everyone else's . . .solid as a rock... Thanks DD, you do great business!

Did you find out what exactly was wrong? Loose bbl nut? etc.

Alaskapopo

07-24-08, 00:39

Mine is rotating on me some. The directions state that you do not need to over tight the allen screws. If I don't tighten them well, the movement gets even worse. I am wondering if something is up with my barrel nut or something. Any suggestions, I have already written DD and am awaiting a response.

Mine is moving on me to about 20 degrees. I can't tighten the screws as I used locktight on them I need to heat them up and Just have not gotten around to it.
pat

bufit323

07-24-08, 14:15

It was a loose bbl nut, from the factory that way. Kind of upsets me, but what are you going to do. At least DD volunteered to fix it (I did not want to remove my FSB and all the crap that entailed).

joelad

08-11-08, 17:54

I just got a second hand set of DD Omega 7.0 rails in the mail.

I fit them to a 16" front end, and they are loose in the front end. They seem to be too short. With a VFG on them, I can move them up and down. Not a very fuzzy feeling there.

The UTG rails they are replacing were rock solid. But I plan on converting this particular upper to gas piston, and the DD Omega was recommended for that purpose.

austinN4

08-11-08, 18:02

I fit them to a 16" front end, and they are loose in the front end. They seem to be too short. With a VFG on them, I can move them up and down. Not a very fuzzy feeling there.
I am sure you probably did, but did you follow the instrucions regarding tightening the 4 allen screws? I have had my Omega 7.0 on 2 different uppers and it was rock solid on both.

And when you say they seem too short, how short do you mean as measured from where? Picture? Also, carbine gas system or midlenght gas system?

theJanitor

08-11-08, 18:44

+1 are all the screws tight? and being short will not affect the function or fit of the rails, as they are free floating and they don't touch the handguard cap

joelad

08-11-08, 18:47

Stickman

08-12-08, 01:01

Disregard my last.

They came with no instructions, but I found Stickman's installation guide and his directions were prefect. I neglected to tighten down the allen head screws, but now it's tight as a drum.

I love these rails!

Every once in awhile I'm good for something.... :D

Glad you got it taken care of, when I first read your post I was trying to figure out what could have caused the issue, and I was hoping you hadn't been scammed by a import knockoff.

jeri534

08-27-08, 00:38

spamsammich

08-27-08, 01:45

Sorry for the bump but I was wondering...

Before tightening the 4 allen screws, is the handguard supposed to be able to rotate freely/easily, along with the delta ring?

I tightened the allen nuts down and the handguards itself feels very solid and tight, but there is still some play when wiggling the delta ring, is that normal?

thanks

Hell no that's not normal. The delta ring should not rotate freely either. I don't think you have your omega actually clamped down on the barrel nut. Either that or you have a loose barrel nut. The delta ring will put pressure on the base of the Omega when it is seated correctly. It is possible to rotate the Omega with some effort, but not easily. When the set screws are tightened there should be NO play what so ever, at all, nada.

Neeglik

08-27-08, 09:13

Well, I have a question and for the sake of not starting another Omega Rail thread, I'll ask it here...

When tightening down the flat head screws to join the upper and lower halves, do the screws go flush with the bottom of the rail channel or do will they stick up a bit? Mine are sticking up. I thought they'd be flush, but I can't see where I did anything wrong.

I tried to look up pics to check it, but couldn't find any of the correct angle.

TIA

Stickman

08-27-08, 09:22

There are a few different angles shown in the below link, it may be of some help. The screws tighten below the outer most surface of the rail, which is what I think you are asking.

http://www.weaponevolution.com/forum/showthread.php?t=65

Neeglik

08-27-08, 09:37

I was referring to the lower part of the rail; where the numbers are. It looks to me in your pics that the screws stick up some there. Seems like this could cause interference if you tried to attach items to those channels. Depending on the method of attachment of course....

spamsammich

08-27-08, 12:31

yes, the plastic crush washers cause my screws to stick up a little bit, but TD ladders and XTMs don't seem to mind it at all.

Neeglik

08-27-08, 12:39

Thanks.... So far I'm pretty happy with the Omega rail on my SBR.

JimmyB62

08-27-08, 19:53

On mine the plastic lock washers also seem to prevent the screw heads from sitting flush in the dovetail. This makes it impossible to use that particular dovetail. It's the only issue I see using the Omega. Not a biggie for me.

Well, I have a question and for the sake of not starting another Omega Rail thread, I'll ask it here...

When tightening down the flat head screws to join the upper and lower halves, do the screws go flush with the bottom of the rail channel or do will they stick up a bit? Mine are sticking up. I thought they'd be flush, but I can't see where I did anything wrong.

I tried to look up pics to check it, but couldn't find any of the correct angle.

TIA

Reddevil

09-03-08, 23:36

Sorry for the bump but I was wondering...

Before tightening the 4 allen screws, is the handguard supposed to be able to rotate freely/easily, along with the delta ring?

I tightened the allen nuts down and the handguards itself feels very solid and tight, but there is still some play when wiggling the delta ring, is that normal?

thanks

I just installed my Omega yesterday and the delta ring does compress. The rail is rock solid as it should be. I believe the delta ring moves because the rail isn't secured to it, it's secured to the barrel nut.

Stickman

09-04-08, 18:05

The rail is rock solid as it should be. I believe the delta ring moves because the rail isn't secured to it, it's secured to the barrel nut.

Good way of phrasing it.