Weapons' rhymes with:
weapon's, weapons, weapon's, weapons, aspen's, aspens, cheapens, coppens, deepens, happens, lippens, opens, oppens, pippen's, reopens, saipan's, sharpens, tippens, weapon's, weapons, yaupons
Weapons' sounds like:
waiving, wapping, waving, weapon's, weapons, weaving, weavings, webbing, weeping, whipping, whooping, whopping, wiping