The pistols vs. rifles argument basically boils down to the expected usage.
In a field environment pistols are nearly worthless. They don't have the range needed to engage a target at any reasonable distance. Moreover, they don't have enough stopping power, especially with the smaller calibers (≤ 9mm /.38), and especially if the target is wearing body armor.
Rifles on the other hand are great all around weapons. They have range, they have stopping power, and at the current tech level and above, need not be unweildy due to shorter barrels, bullpup configurations, and folding/telescoping stocks.
Rifles become a disadvantage when dealing with confined spaces and public perceptions. Onboard a cramped starship, I think civilian crews would favor pistols or SMG's, partly because of the cool factor and partly because of cost. I note here that modern-day Marines use rifles onboard Navy vessels for security details.
Security forces carrying anything larger than a pistol are generally seen as being heavily armed, and in "civilized" societies, that is looked at as intimidation on the part of the security.
In a field environment pistols are nearly worthless. They don't have the range needed to engage a target at any reasonable distance. Moreover, they don't have enough stopping power, especially with the smaller calibers (≤ 9mm /.38), and especially if the target is wearing body armor.
Rifles on the other hand are great all around weapons. They have range, they have stopping power, and at the current tech level and above, need not be unweildy due to shorter barrels, bullpup configurations, and folding/telescoping stocks.
Rifles become a disadvantage when dealing with confined spaces and public perceptions. Onboard a cramped starship, I think civilian crews would favor pistols or SMG's, partly because of the cool factor and partly because of cost. I note here that modern-day Marines use rifles onboard Navy vessels for security details.
Security forces carrying anything larger than a pistol are generally seen as being heavily armed, and in "civilized" societies, that is looked at as intimidation on the part of the security.