Reclaimers are so called because they “reclaim” Oldtech for reuse elsewhere. Reclaimers who go around looking for stuff that’s not being used are called Recyclers, those who find it easier to take from others are called Reavers.
Recyclers and Reavers both follow the Cote Blanc, which prohibits the killing in cold blood of other Reclaimers or people you’re stealing from. Killing during combat is okay. Those who break the Cote Blanc fall under the Cote Rouge, putting a death mark on their heads.