Nerf Rapid Red

The Rapid Red is a clip system Nerf blaster that was released in fall of 2014 under the Secrets & Spies sub-series

The Rapid Red is a semi-automatic flywheel system blaster that resembles the N-Strike Elite Stryfe. It features a tactical rail and two strap points. Its exclusive magazine is translucent red on the right side, which allows the user to read any secret messages written on loaded Message Darts.

Source: http://nerf.wikia.com/wiki/Rapid_Red