Shaun speaks about the U.S. Optics B Series which includes the B25, B17 & B10. He chats about the range of features the B Series from U.S. Optics offers the shooter which include locking elevation & windage turrets, EK2 Stop, Revolution counter, tool-less elevation zero and single button illumination control which is now integrated into the parallax adjustment knob.
If you require information on each product please see the below :