series comparison flashlight surefire

video

for AR-15: Streamlight Protac Railmount HL-X vs. m600 Scout .

https://www.youtube.com/watch?v=gTqs8yfeIPA

https://www.youtube.com/watch?v=mu9lHmM3vzk

https://www.youtube.com/watch?v=ho2jMNhXb9E

https://en.wikipedia.org/wiki/Series