Quote Originally Posted by Slippers View Post
Based on the mounting screws at 3/6/9 o'clock it probably uses the NSR barrel nut. The curved transition from the 3 and 6 o'clock picatinny rails up to the 12 o'clock rail looks just like the NSR, as do the slots that run the full length of the rail.
All of the Noveske Rails use the NSR Barrel nut, including the upcoming Hybrid Rail.