YS 326 Special Effect Attack covers this i believe.
"instead of applying the Weapon rating as stress on an attack. the attacker might instead opt to impose a temporary aspect on the target...
in addition to the stress from the attack roll"... "Weapons used to bind or capture... can have their rating sacrificed to enter the target in a grapple...
in addition to the inflicted stress... the rolls to overcome these secondary effects are made against the weapon's rating" (YS 236) (emphases mine)
It's like I'm reading this section with new eyes. If this is correct, then a Stun Gun (weapon 1) or a Tranquilizer Rifle (Weapon 3) has an innate "secondary effect" which can lay a Maneuver Aspect like "Tazed" or "Drugged."
If I am parsing this correctly:
So assume a guard with Guns 3 using a Tranq Rifle Weapon:3, shooting at a target with Athletics 2.
The attack dice come up as 0, +3 for the Guns skill, resulting in a final attack of 3.
The target with Athletics 2 rolls a 0, resulting in 2 on the defense roll (which fails to evade the attack).
The guard could either inflict 4 stress, or inflict 1 stress and place the Aspect "Tranquilized" on the target.
And if the guard got a total attack roll of 7, he could either inflict 1- stress, or inflict 7 stress and place the Aspect "Tranquilized" on the target.
To remove the Aspect, the target could roll Endurance (for instance) against the Rifle's rating of 3 on his next Exchange, to try to shake off the Aspect (or theoretically a medic could roll Scholarship against that Weapon:3 to provide an antidote/stimulant effect to remove the Aspect.
The stun gun's secondary Aspect would be easier to shake off than the Tranq Rifle's secondary Aspect.