If you have a (badly) damaged or worn Remote Detonation Unit and you arm a plastic explosive with it, it item turns into a pristine Remote Detonator. After disarming you have a pristine Remote Detonation Unit, free of charge.
I haven't tested this in combination with an IED but the result will most likely be the same.
**[[ https://youtu.be/ujZso0YSKiU | VIDEO PROOF ]]**