Tired of winding your regular hi-cap mags? LANCER TACTICAL M4 M16 METAL HI-CAP FLASH MAGAZINE Airsoft Clip - BLACK - CA-04B is the fastest and most efficient Airsoft magazine in the market! On your old high-cap airsoft M4/M16 magazines you had to wind a wheel on the bottom of the mag. The Flash magazine simply takes a few pulls of a string (as pictured) and your ready to go! If you are a CQB or fast paced player then you know you can’t waste any time when on the field, and this magazine ensures that your magazines wont slow you down.