Another review of the new entry into HPA-powered airsoft systems, the Valken V12, the review is done by River City Airsoft... "Taking a look at the brand new Valken V12. Now this is a fantastic alternative to a polarstar it has some of the same functions and some awesome ones such as program lock-out for event organizers and field operaters. Now you will need some things before you can go out and play with it on the field.