FAQ

NOT TIGHT. At all. Literally just thread that bad boy in there and lightly snug it. Your OMEGA Valve will come with the solid screw installed. Use that as your reference for how tight to screw in other screws. Do not use a fancy torque wrench, do not use loctite... just don't.

No. The OMEGA Valve Mod 1 was designed around the 5.56 11.5" and 16" (but especially the 11.5") Virtus and Spear LT barrels. It will fit in the 7.62x39 barrels, and will function to some degree, though this was not the original intention.

It simply will not fit in the gas block with the piston in the 300 Blackout rifles, and even if it could, it will not work with the gas port geometry on this model.

Honest answer and TL;DR, I simply cannot guarantee that, but probably yes. Here's why:

I'm one guy, and while I chose my test silencers very carefully to account for a wide range of different flow rates and technologies, I simply can't test them all. Especially in today's market where we've got some companies making some absolutely incredible designs that are taking full advantage of additive manufacturing and doing very weird things with gas and early shock reflections.

However, I've given you four positions to choose from, four different gas port sizes and geometries. On top of that, the OMEGA Valve is tapped for SCAR gas jet screws, available from Parker Mountain Machine. Between the four positions in the valve, the included solid screw, and the 17 screws available from PMM, you have 69 options (nice) to tune your system, 70 if you opt to remove the screw altogether to utilize the full size vent built into the valve.

Your likelihood for success in finding a combination that works to your preference of behavior is rather high.

Again, with a million and twelve different 5.56 loads out there, I simply can't guarantee that.

However, once again I chose my test ammo carefully. I asked the community what kind of ammo they were shooting. You guys by and large said M193, and so M193 by Lake City (sold by Winchester at the time) it was. I also went with the "cheapest shit I could find" option, which was PMC X-Tac XP193. Finally, I picked up another common 55gr load, Federal .223.

I have published a ton of data on this here.

As of February 1, 2025, I have also done some limited testing with 62gr M855 and 77gr OTM from IMI with good results.

As I do more testing, and as OMEGA Valve users share their experience, I will continuously update the data table.

The FN SCAR 16/17 rifle is a piston gun, similar to the MCX (I can hear the SCAR bros screaming from here). It utilizes a little screw with a hole in it seated into the gas block to vent excess gas from the block and better control the cyclic rate of the weapon. The bigger the hole, the more gas is allowed to vent.

The OMEGA Valve is tapped to accept these to vent excess gas right out the front of the valve. I highly recommend the 2.5mm hex screws sold by Parker Mountain Machine.

I'm currently working on Mod 2. No ETA. 6.75" owners rejoice.

I would absolutely love to design an OMEGA Valve Mod 3 built around that. But seeing as how I do not even have a specimen to test with, I can not even begin to postulate when this will be possible. Just know that I want to.

So, a couple of things:

1. The OMEGA Valve indexes on the gas regulator retaining pin; this is something that was never meant to be with Sig's design. It will take some time to sort of wear the edge of that pin to allow the flanges on the valve to gracefully slip over it.

2. The OMEGA Valve isn't really meant to be swapped back and forth all willy nilly or adjusted on the fly. You should go through a proper tuning session with it for your setup, then kinda set and forget it. That being said, if you don't have either window obscured by gizmos, such as flashlights, you should be able to adjust it without removing the handguard. If one of those windows is obscured, adjustment may be difficult without removing your handhard.

3. To make it easier, just lightly press the retaining pin in just enough to allow you to more easily rotate the valve.

Well, the good news is that your action should be marginally cleaner. The bad news for you is that there is no free lunch.

In the original valve, there was always one of the two positions not in use, where gas was trying to leak outta there back into the walls of the gas block.

Now you've got three.

I would suggest hitting your OMEGA Valve with a little CLP before your first use. After that, it would be a good idea to remove the valve and scrub it as well as the inside of your gas block roughly every 1,000 rounds or so to do away with any carbon buildup. If you don't, the OMEGA Valve could get sticky and hard to turn.

This is why I designed the holes surrounding the end of the valve. Insert a spent casing, bullet, or Alan wrench or something through the holes to gain some additional leverage.

I've only encountered this once, after going for weeks of live fire testing with no cleaning, and that was before I decided on going with a Hexagonal Boron Nitride coating to keep it more slick and easier to keep clean.

I don't know, but probably. I think I heard somewhere that the aftermarket regulators available for the SCAR will void FN's warranty, and the poor, fearful consumer in me leads me to believe Sig might have a similar mentality. This is sort of unprecedented with Sig, so they will probably say something about it at some point.

Be a man, void your warranty.

Yes and no. Honestly. The OMEGA Valve was truly designed for tuning a suppressed rifle. I managed to pull off some successful testing with 55gr ammo, but I can't say that it'll run with anything with the same degree of confidence that I can with a silencer involved.

That being said, it will still delay the action of the rifle, it will still reduce recoil, and it will still reduce the amount of gas to your face.

On the OMEGA Valves themselves? Yes. If you receive one and it doesn't fit, send it back for a full refund. I will be checking every single one before they go out, but I have experienced out of tolerance gas blocks that were jacked up from Sig.

If you are buying this with the sole intention of shooting unsuppressed with it, and it doesn't work with FACTORY AMMO, send it back. There will be a $37.74 restocking fee.

If you over-tighten your screw because you didn't read the instructions, and you need me to get it out for you, send it back and I'll get it straightened out. The restocking fee applies.

If the valve somehow fractures or otherwise breaks, send it to me immediately for a free replacement. I don't see how it could possibly happen, but there you go.

LITERALLY ANYTHING ELSE: see the terms and conditions sections at the bottom of the page.

I know, and I'm sorry about that.

Look folks, I am 100% confident in my product. That being said, this is literally my first attempt at this sort of business ever, and I'm honestly scared of it. Not my product, but the industry itself. It's new territory for me, and I just want to keep myself protected the absolute best I can. That's all. A lot of you guys have spoken to me over the last couple of years, I hope I've come off as a pretty approachable guy. Hit me up if you have concerns, please.