Note. To the best of my knowledge this is not based on any existing Fallout Equestria storyline, nor does it follow any particular plot in Fallout 4. This is just the narrative that popped into my head as I worked on this piece.
Bam! Bam! Bam! Bam! Vinyl Scratch fired the last 4 rounds of 9mm from her pistol as the last of the immediate assailants collapsed and fell to the ground. From behind a stack of now bullet-riddled speakers the unicorn could hear partner her Octavia withdrawing her submachine gun from it's case. Like Vinyl she'd initially emptied her pistol into the assailants who'd interrupted their performance. The crowd that had been enjoying their performance had fled out the side exits of the old building.
From the front lobby of the old theater Vinyl heard the sounds of cursing and quickly approaching hooves. Apparently the gang members that had just attacked had friends. The white unicorn dropped the empty 8rd magazine from the pistol. She reached down and yanked wooden holster/stock from her belt. Popping open the stock Vinyl reached in and pulled out the 32rd magazine that was resided in the stock. Slamming the extended magazine into the pistol grip Vinyl attached the stock to the pistol. Then the performer yelled out to her partner.
"Shit! Octy! We're going to have company! The unicorn thumbed down on the pistol's selector that resided on right side of the slide. Shouldering the now stocked machine pistol Vinyl pressed the trigger and sent a 8rds at the theater entrance in one fast burst.
Bbbbrrrraaaapppp!
The roar of gunfire caused the new wave of assailants to hesitate at the entrance. Having halted their advance for a moment the DJ dove behind another stack of speakers as Octavia started laying down short, precise, bursts of cover fire for her.
Having at least gotten some concealment Vinyl started looking for new targets. This had to be the worst gig ever!
A patron reward for . It will be interesting to see if people can guess what Vinyl's weapon is.