Systema Ver.2 MP5 Gearbox Infinity U-30000 motor ASCU Gen.3 motor SHS M125 spring its an old gun, and it could use a new handguard as its not sturdy anymore. i can get a new one for you if you're seriously interested. Would like $300 obo (I know its high) , make me an offer (I won't be offended, dont be stupid). Can get more mags if thats a Deal breaker, too.