! Configuration name !! Barrel length !! Other effects !! Corresponding base models !! Cost ([[File:Parallar symbol.png|10px]]) !! Description
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| '''Machine gun''' || 23.2 inches || Weight +2 tiers<br/>Affects weapon category<sup>'''[[Maze Customs:Major mods#AK weapon categorization|(*)]]''' || [[RPK]]<br/>[[RPK-74]] || '''600''' || Installs a 23.2 inch heavy barrel, intended for machine gun use, but can serve for DMR purposes as well.
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| '''Rifle''' || 16.3 inches || Bayonet compatibility: [[6X5 AK bayonet]] || [[AKM]]<br/>[[AKMS]]<br/>[[AK-74]]<br/>[[AKS-74]]<br/>[[AK-101]]<br/>[[AK-12-1]]<br/>[[AK-12-2]]<br/>[[AK-12-3]]<br/>[[Saiga SGL31-61]] || '''300''' || Installs a standard rifle-length 16.3 inch barrel.