I am a Rep for Deadair so I am kind of biased, lol. Our Lazarus Can is amazing for 556. It's actually a 6mm can but was designed for 556. It really makes changing recoil springs and adjustable gas blocks not necessary. It has about 60% less back pressure and the tone is awesome. Our new Sandman X is a Tank and will handle all the full auto and hard use AR platforms.
If you want something for a bolt or basic AR use look at the Nomad XC. Its light short and has a great tone.
If i can help with any questions let me know.
James
Good info. I have a couple of the older Sandman S's. I'm be looking for another can before long and I will check out your suggestions.
