BROOOOOOOOOOOOO
If you're fighting gobbos, the only real tools to use are either the Armalite model 15/18, the Chamberlain Model 60E4 (now made by US Ordinance), or the Fabrique National model 240G; maybe the FN Model 249.
While the first is for varmint hunting (and givlins are literally the definition of varmints!), the other three are specifically anti-personell... and all of them can be purchased in the US with a class 3 permit. Just like the suppressor our MC purchased.
So definitely consider using the right tool for the job; especially as the standard size of magazine for the Armalite is 30 rounds.
You dont want to be stuck re-loading when being rushed by gobbos, homie!