Oh, a little FYI: Looking at the pressure curve for the 223 you are going to be much better off using a longer barrel length. I know alot of people describe a suppressed 223 like an unsuppressed 22 Long Rifle. However, to my ear, it was much higher pitched, like a high power airgun. It was really windy that day so that might have hid the noise a bit. I knew it was going to be quiet, just not THAT quiet.
As for the construction, it is built like a tank. Thick blast baffles and spacers. Plenty of metal were it needs to be to get the job done.
Here is a pic of the inside of one.
Inside a TAC-16
In terms of bang (Or lack of it
) for the buck the TAC-16 is hard to beat. Everyone I have talked to rates them highly and my SOT sells them regularly. Yes there are smaller, quieter, lighter suppressors on the market. However, the TAC-16 is the Model T of suppressors IMHO. It fills the needs of most people and doesn't break the bank.
Be sure to get the takedown tool. I took mine apart and put Anti-seize on the threads just to make it easier to take apart if I should ever need to.