[Joe 6-pack]

In IPSC and PPC classes the disadvantage of a DA/SA is that they are required to fire the first round in DA mode, even if capable of firing SA. Converting them to SAO overcomes this rule.

I do believe under older IPSC rules, some classes excluded DA pistols altogether.

In the real world, where one may carry a DA pistol prepared to fire the first round SA if desired, those rules do not apply.

[Spktyr]

In the real world, DA mode for first round often means “first round flyer” which goes nowhere near the point of aim. This is why many police departments have shifted to DAO and semi-DAO types.

And before you claim you would cock it first before firing to get to SA mode, wow, you just slowed yourself way down.