I had to look it up. I have an Omega 9k and it's just the titties for 9mm. Tons of mounting options including ASR flash hider and 3 lug for subs and carbines. Short enough to actually use on a pistol. They seem very similar save that extra blast chamber for rifles. Because when you use an ASR mount in an Omega 9k, it does take up a lot of the blast chamber space (though they do make a compact one, just not sure it's for 9mm).
But unless you plan on actually using it on other caliber weapons, or you plan on using it on 9mm rifles (I use mine on a Tavor) and are using an ASR mount, I don't see much use. And even then not so sure the ASR would make that much difference? What concerns me is the db rating --128.9 AND UP. How far up? With what caliber?
If you have .350 Legend and hunt with it now and again, I can see this being the titties. If it's superior on 9mm rifles with the ASR mount and you intend on using it on rifles and pistols, I can see it being useful that way. If not and/or dedicated to 9mm pistols, then Omega 9k and save the money.
