Is Butterfly Knives Legal in Colorado? (2026)
Yes — Butterfly Knives are legal in Colorado as of 2026.
Quick Answer
Butterfly knives are legal to own and carry in Colorado with no specific restrictions beyond general knife laws. No significant state-level changes, but local ordinances are becoming more common.
- Age restriction: 18+ for purchase
What the Law Says
Colorado law does not explicitly ban butterfly knives, but it is illegal to carry a concealed knife with a blade longer than 3.5 inches. Local jurisdictions may have their own bans.
— C.R.S. 18-12-105
| Category | Details |
|---|---|
| Possession | Legal |
| Sale & Purchase | Legal |
| Penalties | N/A |
| Age Restriction | 18+ for purchase |
| Pending Legislation | None known |
No significant state-level changes, but local ordinances are becoming more common.
Enforcement Reality
Enforcement can be inconsistent due to a legal gray area. While not explicitly illegal, they can be considered gravity knives, which are legal. However, local ordinances may have stricter rules.
A common mistake is carrying a butterfly knife with a blade over 3.5 inches concealed, which is illegal. Many cities also have their own bans.
Local Exceptions
None identified. State law applies uniformly across Colorado. Local ordinances may still vary — check with your city or county government for any additional rules.
Bottom Line
Butterfly Knives are legal in Colorado. You can carry them without violating state law, though federal rules and local ordinances may still apply. Always verify current law before acting.
Colorado vs. the Rest of the US
Across the US, carrying a butterfly knife is fully legal in 39 states, restricted in 10, and illegal in 1. Colorado falls in the LEGAL category.
View the full 50-state map →Neighboring States
Laws change at state lines. Here is how bordering states compare on Butterfly Knives:
Frequently Asked Questions
Is it legal to carry Butterfly Knives in Colorado?
Can you carry a butterfly knife in Colorado?
What is the age restriction for carrying a butterfly knife in Colorado?
Does the law on carrying a butterfly knife change at the Colorado border?
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Reviewed by cross-referencing the cited state statute against current legislative databases and regulatory publications.
Sources & Verification
This page was reviewed by Ethan Harper by comparing the legal status against the cited state statute. AllowedHere is an informational resource and does not provide legal advice. Consult a licensed attorney for guidance specific to your situation.
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