745.1. Quick-Draw is a Triggered Ability keyword. It is also a Permissive keyword.
745.1.a. Quick-Draw is present on Gear with Equip abilities.
745.1.b. Cards with Quick-Draw have Reaction inherently.
745.1.c. Quick-Draw allows cards to be played and Attached using Reaction timing.
745.1.d. Quick-Draw is functionally short for “ [Reaction] ” and “When you play this, attach it to a Unit you control.” See rule 716 Attachment for more information.