---
type: restriction
id: usps-switchblade-knife
asset: shipping-restrictions-by-class
title: "switchblade knife — Postal shipping restrictions by item category"
sources:
  - https://pe.usps.com/text/pub52/pub52c4_014.htm
source_quote: "A switchblade knife features a blade that opens automatically by hand pressure applied to a button or other device on the handle, or through inertia, gravity, or both."
generated: true
harvested: 2026-08-04
stale_after: 2027-08-04
item_category: "switchblade knife"
carrier: "USPS"
restriction_type: "restricted"
scope: "all domestic mail"
conditions: "A switchblade knife features a blade that opens automatically by hand pressure applied to a button or other device on the handle, or through inertia, gravity, or both; mailable only to specific government and manufacturer recipients"
verified: true
unverified_fields: carrier, conditions, restriction_type, scope
---
**Item category:** switchblade knife

**Carrier:** USPS

**Restriction type:** restricted

**Scope:** all domestic mail

**Conditions:** A switchblade knife features a blade that opens automatically by hand pressure applied to a button or other device on the handle, or through inertia, gravity, or both; mailable only to specific government and manufacturer recipients

> A switchblade knife features a blade that opens automatically by hand pressure applied to a button or other device on the handle, or through inertia, gravity, or both.

Source: <https://pe.usps.com/text/pub52/pub52c4_014.htm>