The OD stock in the picture has two issues.
1. It is an AR15 PRS with the AR15 cheek riser cut back to allow the AR10 charging handle to function. This was not done by us. All AR10 PRS stocks that come from us have a shortenen cheek piece AND a longer forward piece to fill the gap. Also the shortened AR10 cheek piece is rounded on the forward edge not straight cut like on a bandsaw.
2. The receiver to stock fit is the result of a longer buffer tube than normal. Simplist solution is to get a tube within mil spec length from DPMS or Colt.