[img]http://img2.wikia.nocookie.net/__cb20140107004334/nerf/images/4/43/RoughCut2x42014.jpg[/img]
It's amazing how some things can inspire you...

This is my new idea for Renga's pet gun: Taking 8 of the replenishing side arm blaster pistols, he is going to try to assemble a repeating blaster by striping away all the biped required interface (trigger, handle, ect) and alighn them into the 8 barrel systems then slave it to a singe trigger. 

"The DC-15s had a recharge rate of one round per second and was capable of eight consecutive shots with energy fully recharged; after eight shots, the user had to wait for recharge of energy for at least one shot to fire again."

Mark 1 would be just a suppressive fire module firing 8 shots every second infinitely without strain to the cells as they produce as much as  their output with a margin for buffering. This would most likely be his default setting to pin down enemies for others to get into a better position or to maintain a battle of attrition in a firefight.
Mark 2 would be considered more of a hammer by firing sets of paired burst fire at a time to make up for the minimal damage over a focused area in the example of alternating sets of 4 every half second or big 8 barrel blasts at a time. This leaves bigger gaps to be exploited but would be better on more strongly armored or immobile targets.
Mark 3 would be something more akin to desperation/phalanx by emptying all 8 clips in a 64 round salute and having to wait 8 seconds between each volley. this would be something he could use against a force empowered opponent or a robots enhanced reflex processors by simply presenting an overwhelming amount of firepower to be blocked or redirected without a shot getting through.