Centurion Arms is introducing Centurion Modular Rail(CMR) System in 9.5" and 11" length. It has 1913 rail on top, and accessories can be mounted on 3, 6, and 9 o'clock position directly.
It also has built-in anti-rotation QD sling swivels in 4 positions.
Weight is 9.4oz for 9.5 inch mode, 10.4oz for 11 inch model.
More Info -
Link to Centurian website
From: Centurion Arms