Well I have the 300 blk-out Build Done.
Here is a Picture of my SBR that I am Currently waiting on stamp (one month ago on this day submitted SBR E-File 7-23-2015).
The sights are on it just for show will have a Aimpoint or Reflex sight on it when Stamp Arrives.
Still Waiting on Ace Short Stock (waiting on next check) and the Stamp for the ARC30 Can for it (sent off a while back).
Went with JP Silent capture Spring setup and Trigger group is a Stainless Set that I Smoothed up (works great) and the Bolt carrier in a Nib Coated one.
It sports a 10.5 Ares melonite coated Barrel (quality seems good on the barrel).
The rail is a perfect fit and the base of the threads are about 1/16th of an inch past the rail.