QM: since an anon also did mention scavenging,
>>6043207I suppose you can find enough components to assemble an
Improvised Tin Can Suppressor
(pic related, except imagine it fits over your Serbu Shotgun
>>6039203 and not the sawnoff Mosin obrez pictured).
So this suppressor only works for ONE shot (afterwards, the Tin Can is just completely ruptured and irretrievable). It probably also reduces accuracy though this doesn't really matter for the weapon you currently possess.