could someone elxplain the "Stars" to me

[Blade]

like the tittle says, im new to mags, i had one sold it, then waited about 6 months and had to get another on, i have a 4 star valve and a 1 star vlave, so if someone could help me, it would be cool

[TransMan]

the stars represent how many free rebuild you cna get from AGD. Which means you send in your gun they do the repair work or what ever for free and mark a star off your valve. Once you have no stars left you have to start paying for the repair.

[nic m85]

I was wondering the same thing:)