This is a new inner arm part and a custom 5mm Hand + 2 lasers for the Reveal the Shield Voyager Class Grapple figure. One laser is based on how it appeared in the G1 Cartoon and the Masterpiece Grapple figure, the other Laser is designed to look like the original "Missiles" that came with the G1 Grapple toy. All 3 parts attach to the arm interchangeably via a 5mm peg. Keep in mind, the right arm version of this kit assumes you have an additional 3rd party kit or part(s) to relocate the figure's construction crane to another part of the figure.
This is a kit for the figure's Right Arm, if you want the same kit for the left arm, that kit is located at the link below.
Left Arm Kit: https://www.shapeways.com/product/KQSYXQYST/rts-grapple-left-arm-laser
Picture of the arms attached to the full figure provided by these parts' requester - Mdowns.