Injection Glove
Injection gloves were originally designed for medical use, but they have been heavily altered to serve in combat as well. A flat cartridge containing an injectable substance (such as a medicinal or poison) is inserted into a slot in the pointer finger of the glove, where it connects with a retractable needle. When the pointer finger encounters resistance, the needle pops out and injects its contents. The needle is reset by pressing it against a hard surface (which can be done as part of reloading it).
Source
Core Rulebook pg. 172
Dragonscript
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