12/16g Elite Pro Magazine master pack for the Firstrike FSC

The master pack includes:
Elite pro mag 
3 x mag extenders
Small medium and large.
Uograded spring.
Upgrade from the standard 8g magazine to the new Cs 12/16g mag, giving you more shots per reload,
We decided to move away from the go to clam shell design and also Introduced a clamp section to position firm the co2 valve from your standard mags (both valve, spring and adjuster from your standard mags  are transferable to the the new mag and will be required)