This means that you'll be able to search for NAICS codes directly (if that's your jam). We'll do the math; let's make better data on public procurement together.
Inspection and Laboratory Services (except medical/dental): Ammunition and Explosives
Includes: Commercial Testing and Laboratory Services
Excludes: Medical and Dental Laboratory Services
Possible NAICS Codes
541380 – Testing Laboratories
325920 – Explosives Manufacturing
332993 – Ammunition (except Small Arms) Manufacturing