# NAICS 56161: Investigation, Guard, and Armored Car Services

No SBA size standard is recorded for NAICS 56161.

| Field | Value |
| --- | --- |
| Code | 56161 |
| Title | Investigation, Guard, and Armored Car Services |
| Level | 5 |
| Parent | 5616 |
| Size standard | - |
| Footnote | - |

## Description

This industry comprises establishments primarily engaged in providing one or more of the following: (1) investigation, detective, and personal background check services; (2) guard and patrol services; and (3) picking up and delivering money, receipts, or other valuable items with personnel and equipment to protect such properties while in transit.

## Sources

- Census NAICS: https://www.census.gov/naics/
- SBA size standards: https://www.sba.gov/document/support-table-size-standards

## API and MCP

- REST: GET https://samgovapi.io/api/v1/naics/56161/size-standard?revenue_usd=...
- MCP tools: naics_lookup, size_standard_check

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