This is the Duopulse Discharger, a double blaster set for the Classics Hot Rod figure! These 2 blasters are inspired from the original G1 styled blasters and are updated to fit better with modern aesthetics.
Yes, both blasters are able to combine to form a sniper rifle with an impressive length of 123mm!
Even though both handles can fit Hot Rod's 4mm peg hands, they have a thicker top section to accommodate standard 5mm peg hands as well.
This model has been tested in White Strong Flexible and Alumide. Due to its brittleness, Alumide is NOT recommended. Use Strong Flexible material instead.
To allow the figure to mount the sniper rifle in alt mode, you can check out the Duopulse Discharger adaptor
For a better fit with the voyager Springer mold (aka. Cloud Rodimus), try getting the full 5mm peg variant