Here are some pics of my 2 stamp gun...I also used a Spikes lower (Pirate). Mine has the 9" AAC upper on it and I also run an Omega suppressor. Concerning the muzzle brake on the end of the suppressor: I agree 100% that I do not like the way it looks and also was going to buy the flat end cap for it. But THEN, I took it out to the range to dial in a new scope and sat there and went thru about 100 rounds, all suppressed with my Omega. Got it all dialed in and started putting stuff away. I removed the suppressor, put it in it's little storage bag or whatever they call that and then I found a handful of ammo left over. So I loaded them into a mag and went ahead and shot them (5 rounds or so) WITHOUT the suppressor. It was then that I realized that even though the 300blk doesn't have much of a recoil, that little muzzle brake on the end of the Omega really really helps and smooths out the rifle a lot. Way more than I thought it would. Makes it seem like I'm shooting a .22. I was really surprised!
I use my Omega on both 300blk guns as well as 5.56 guns and I considered getting both the flat end caps for the .30 cal and the 5.56 cal, but have since decided that I like the muzzle brake too much and I don't want to accidentally risk having a 5.56 endcap on it when shooting 300blk so I didn't even order them and just use the factory muzzle brake endcap for everything. I recently did a few mag dumps with my Omega and got the titanium heat mark on it. At first I was mad but then found out that it is fairly normal with titanium cans to discolor like that. Silencerco would refinish it if I sent it in, but I sort of like the way it looks with that heat discoloration on it.
Anyway, enjoy your setup, it is awesome!
