Versions of Iowa Code 724.1B - Firearm suppressors -- penalty on LawServer 2024 Iowa Code 724.1B – Firearm suppressors — penalty 2023 Iowa Code 724.1B – Firearm suppressors — penalty 2022 Iowa Code 724.1B – Firearm suppressors — penalty. 2020 Iowa Code 724.1B – Firearm suppressors — penalty. 2018 Iowa Code 724.1B – Firearm suppressors — penalty.