I would talk you out of it, but I bought one for the same 3 calibers plus 6.8 myself :D
Just waiting on the thing to get out of NFA jail :(
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Just picked up my Omega on Wednesday & am going to try it out tomorrow on several rifles, 11.5" BCM AR pistol, 16" BCM Mid length, and my 22" M14. I have ran them all with my Specwar 7.62 & have been quite pleased with it other than its weight. Well see how my Omega compares, although I am expecting it to be a bit louder than the Specwar, but the weight diff is a huge plus already.
I shot my Omega with 5.56 endcap on my 11.5" 6933 upper yesterday and was very impressed. It is mounted with the brake / ASR. The sound was similar to an unsupressed 22. Very comfortable to shoot with just ear plugs where before I had to wear earplugs and muffs to shoot. I have a VLTOR A5 buffer system and an SLR adjustable gas block. I was expecting a lot of gas blow back but didn't notice any.
The biggest issue I had was mirage from the suppressor getting hot. I was shooting slow five round groups and the mirage was getting fairly strong after only a couple of groups. I had to shoot through the mirage. The suppressor also takes a long time to cool down when it gets hot.
Overall I really like it and it makes my SBR much more enjoyable to shoot. I only shot 100 rounds but look forward to shooting many more. I was concerned about the suppressor working loose but the ASR mount held up rock solid with no play.
My SBR only weighs 8LB empty with suppressor attached.
Attachment 34612
The ASR is so easy to use, I can see where someone may worry about it at first, but it isn't going anywhere. I will say that I do feel a little difference applying the locking ring between my Specwars and ASR MAAD. On the ASR MAAD, the locking ring is a little stiffer and harder to lock and unlock. I haven't had it long, so it hasn't been used as much as the Specwars. The host that I have used it on also has a light right beside the muzzle device, so I can pretty much only use a couple fingers instead of getting my thumb and index finger wrapped around it.
The SOCOM762-RC line was not meant to be the quietest suppressor. If sound is your #1 priority then you should check out the SureFire 300 SPS suppressor.
Sound Data Averages:
120dB - .300 Blackout subsonic
129dB - 7.62x51
134dB - 5.56
137dB - .300 WM
FWIW, some of the Omega's db numbers have been proven not entirely accurate in comparison to other suppressors. For starters they used their proprietary Harvester 300blk ammo which meters a couple db's quieter then factory Remington subs that most companies where using.
The fact that the Omega doesn't come in the Trifecta MAAD mount was a deal breaker for me as I'm already heavily invested in Surefire, TBAC, and SiCo Trifecta mounts.
Another can you should be looking at which is a light as the Omega is the Thunderbeast Ultra-9.
The only downside of the 300SPS is the fact that it is 8 inches and 20.3oz. I'm guessing that the extra length provides the extra suppression and weight. I would really like to see some videos of non-surfire people metering the can side by side with some other compareble cans. The Omega is 7" with the brake on and about 6" with the flat endcap and that is about as big as I would want hanging on the end of a 556 in 10.5 or 14.5". I think 8" is just too long if you plan on running it on anything other than a sub 8" 300blk barrel.
My "gripe" is that they advertised the Omega as the "quietest rifle can" when they used ammo that wasn't even for sale at the time to the general public. To the uneducated consumer thst js only looking at SiCo's advertised numbers and then comparing then to Silencershop videos, or other manufacturer claims it becomes false advertising. Take a look back at older threads at all the people that were upset when the real more realistic Omega numbers actually came out.
ETA: I own 4 Silencerco cans, and have no grudges against them.
OP. You should really make a list of all the features you want in a can and go from there (sound suppression, back pressure concerns, flash suppression, weight, durability etc. From this post it seems you care more about length, weight and sound suppression. If that is the case the Omega would be a good choice, as well as the TBAC Ultra-7.
I'm not bothered by the ammo and company supplied numbers. I don't think it is a good idea to buy anything based solely off of the word of the company that is made it and trying to sell it. That is why I like to read, watch, and listen to reviews of the products and side-by-side comparisons.
FWIW: My list of needs in a do-it-all suppressor are: Solid Mount (taper or qd), Suppression on all Calibers, Length/Weight that keeps a 14.5" AR managable, and Repeatable POI. Gas issues can be solved/minimized by propper gas regulation via the bcg and the gas block.
I was only addressing the gripe against the ammo that was used. And yes, I remember the whining about tested decibels and false advertising nonsense. Some people get way too bent out of shape over a couple decibels, and put way too much stock in published decibel levels in the first place. Most likely, they have Hollywood expectations and will be unsatisfied regardless which suppressor they end up owning.