Front flip on Omega 9.0?

AR/M4 AR Technical Discussion
1

Since it’s a free float, any issues with doing it? Curious if anyone has.

I may want to do a project by replacing the fsb with a block, but retain the end cap and Delta assembly. Want this the run magnified optic without the front sight interference on low power. The other thought was to just use a Troy since it would be the easiest to use with an existing upper.

Or I could use a gas block/flip combo

Mark

2

Mark,

Two of my guys here have shorties with 9.0 rails and they use a front/rear BUIS and an EOTech mod. 552. Seems to work good for them.

3

Gunz, Are they the Omega’s or the 9.0 that uses the DD barrel nut arrangement?

Mark

4

My bad, they are the latter.

5

No worries, Stickman over here?

6

I’ll be trying the DD Omega 9" on top of a shaved FSB and Troy Buis. I’ll report the results on this thread in about a weeks time.

7

Mark, I’m somewhat confused as to what you want to do.

The FSB holds the handguard cap in place. If you replace it with a gas block, it should still hold it in place, but a 9.0 rail, unless on a midlength, is going to run into conflicts with the cap. Am I missing something?

8

Rob, It would be on a middy. You see I was trying to retain the stock items as much as possible. By the way, does the Omega need the end cap and will the end cap interfer if it doesn’t? I might just shave the fsb down so I won’t have to worry about pinning.

Mark

9

Sounds good! pics!:cool:

10

I don’t think that the Omega is the best application in that case, but I may be alone in that thought.

IMHO the application for the Omega is when you’re keeping the front sight base in tact, unless there’s a cost or other installation issue. But, removing and/or grinding the FSB is a pretty armorer-y (made that word up!) thing to do, which would make me think that anyone capable of tackling that would also be capable of installing a DD M4 or Lite.

11

The Omega was my second thought, the Troy route was first. I’ve done the fsb thing, just takes time, no biggie. I think I will do the 12 Troy.

Thanks Rob

Mark

12

Will do in a few days.

13

I was planning on getting a 9" Omega rail for a 16" carbine rifle. I was also planning on getting a low profile vltor gas block, is the handguard cap Necessary for the Omega rail? Or should I just get a rail that mounts behind the delta ring, so the end of the rail will have the smooth hidden gas block look.

14

Here are the pics:



15

This is an OMEGA 9.0 on a BCM midlength. There is about 3/32 of an inch space between the handguard cap and the rail. Also, as you can see from this angle, due to the narrower profile of the DD rail you wont be able to slide accessories onto the side rail from the front without doing a little trimming. Obviously things like LT mounts that clamp over the rail have no issues. The OMEGAs mount on the barrel nut and have set screws that square the rail up and tight via pushing on the front of the barrel nut. They do not mount to the handguard cap.

Regards,
Ek

P.S. - Sorry about the cheesy pics. I live out of hotels so I can’t really waltz out into the parking lot to take a few photos in the sunlight. :rolleyes:

16

kukang,

Did you have much trouble getting that shaved FSB under your Omega rail?

I’m really curious as to whether or not you had to shave the pins also. The Omega seems to be a pretty tight fit.

thanks much, Sam F

17

Yes, I had to shave the pins down flush. You’re right - it is a very tight fit but not hard to do.

18

You don’t need the handguard cap to use the Omega. It works just as well without.

19

kukang,

Nice job. I’ll be working on that very set-up later this week. Thanks much,

Sam F

20

You are very welcome.