The PKT RKT by Halfmoon mods is a fully mechanical mod with a difference. 

Made out of Aluminium alloy and Acrylic, not only does this mod fit nice in the hand due to its ergonomic triangular body shape, it looks amazing and is an extremely hard hitter. 

Featuring a solid copper contact and hybrid 510 connection, an easy to use battery rattle adjuster, a threadless button housing and also has the capabilities to take 18650/20650/20700 and 21700 batteries all with a quick change of the acrylic middle section. 

The PKT RKT comes standard in 21700/20700 mode and is easily changed the 18650/20650 mode just by removing the button housing, removing the 3 screws, removing the acrylic section and installing the supplied 18650/20650 acrylic section and re-assemble, the process takes no time at all.