Get max bullets in clip

Is there a command to get the max ammount of bullets you cant have in a clip? cant find it in the wiki
i want this for a custom HUD.

[editline]01:53AM[/editline]

okey ive come up with an idea that may work but i cant make it work.
it will write a total value if bullets in clip is greater then total variable
everytime you change your weapon it will reset.

    local mag_left = client:GetActiveWeapon():Clip1() // How much ammunition you have inside the current magazine
    local total = total or 0
    if mag_left > total then
    local total = mag_left
    end
    if weapon != client:GetActiveWeapon() then
    local weapon = client:GetActiveWeapon()
    total = 1
    end

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