Whose low profile gas block is that ? LaRue, PRI, ?
Whose rails did you use ? Looks like the "Car" length rail system.
How long was your wait time with the BATFE approval ?
I've never fired the AAC can, but even Joe Gadinni of SWR will tell you that AAC and Surefire are the people do beat in the .223/5.56 suppressor market. And he's in the business of manufacturing suppressors.