If you want to limit your mags to 10 rounds each, with an iron sighted, near factory pistol DA/SA, striker fired (no magwell, barrel porting, etc) reload mags a lot during, then it is Production division.
If you want more ammo in a mag and an optic, with DA/SA, then Carry Optics.
If you want SA only with an optic, then Limited Optics
If you want SA only, no optic, then it's Limited 10 or Limited.
If you want a 1911 SS, then Single Stack division.
If you want to do juat about anything you want to a gun, then Open Division.
If you want to shoot a revolver, then Revolver division.
If you want to shoot a PCC, then PCC division.