Does the multiple award preference at FAR 16.504 apply to sole source awards pursuant to FAR Subpart 19.8? My contracting office has been requested to issue a solicitation sole source to an 8(a) firm for a single award IDIQ services contract. I know that authority for sole source contracts is found at FAR 6.302-5(b )(4) and FAR Subpart 19.8. However, my reading is that for IDIQ contracts, FAR 16.504 still applies. Hence the multiple award preference described FAR 16.504( c) would still apply