---
type: "Bill"
title: "Unserialized Firearms And Firearm Components"
description: "The act defines terms related to federal firearm licenses and firearm components, including \"frame or receiver of a firearm\" and \"unfinished frame or receiver.\" The act prohibits:"
jurisdiction: "us/states/co"
legislature: "Colorado General Assembly"
session: "2023A"
identifier: "SB 23-279"
citation: "Colorado SB 23-279 (2023A)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Andrew Boesenecker", "Chris Hansen", "Junie Joseph", "Rhonda Fields"]
version_count: 9
action_count: 13
vote_count: 3
first_action: "2023-04-12T06:00:00+00:00"
last_action: "2023-06-02T06:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/7f1ea1a8-848d-4855-91ce-ae9164aebf39"
source_url: "https://leg.colorado.gov/bills/sb23-279"
source_hash: "a9450b40574c46dc610e1b55e4c93c46726da230b953acf106db8409e9c723e8"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-co"]
---

# Colorado SB 23-279 (2023A) — Unserialized Firearms And Firearm Components

The act defines terms related to federal firearm licenses and firearm components, including "frame or receiver of a firearm" and "unfinished frame or receiver." The act prohibits:

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Committee Amendment** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/2023a_sb279_h_jud_001.pdf)
2. **Engrossed (04/27/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_279_eng.pdf)
3. **Final Act (05/10/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_279_enr.pdf)
4. **Introduced (04/12/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_279_01.pdf)
5. **PA1 (04/21/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_279_s_sa_01.pdf)
6. **Reengrossed (04/28/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_279_ren.pdf)
7. **Rerevised (05/05/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_279_rer.pdf)
8. **Revised (05/04/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_279_rev.pdf)
9. **Signed Act (06/02/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/2023a_279_signed.pdf)

## Votes

- BILL — **20–12** (pass) · upper
- AMEND — **32–0** (pass) · upper
- BILL — **46–18** (pass) · lower

## Sponsors

- Andrew Boesenecker — primary (person)
- Chris Hansen — primary (person)
- Junie Joseph — primary (person)
- Rhonda Fields — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2023-06-02T06:00:00+00:00** Governor Signed `executive-signature`
- **2023-05-10T06:00:00+00:00** Sent to the Governor `executive-receipt`
- **2023-05-10T06:00:00+00:00** Signed by the President of the Senate
- **2023-05-09T06:00:00+00:00** Signed by the Speaker of the House
- **2023-05-05T06:00:00+00:00** House Third Reading Passed - No Amendments `passage, reading-3`
- **2023-05-04T06:00:00+00:00** House Second Reading Special Order - Passed - No Amendments
- **2023-05-02T06:00:00+00:00** House Committee on Judiciary Refer Unamended to House Committee of the Whole `committee-passage, referral-committee`
- **2023-04-28T06:00:00+00:00** Introduced In House - Assigned to Judiciary `introduction`
- **2023-04-28T06:00:00+00:00** Senate Third Reading Passed with Amendments - Floor `passage, reading-3`
- **2023-04-27T06:00:00+00:00** Senate Second Reading Passed with Amendments - Committee `reading-2`
- **2023-04-24T06:00:00+00:00** Senate Second Reading Laid Over Daily - No Amendments
- **2023-04-20T06:00:00+00:00** Senate Committee on State, Veterans, & Military Affairs Refer Amended to Senate Committee of the Whole `committee-passage, referral-committee`
- **2023-04-12T06:00:00+00:00** Introduced In Senate - Assigned to State, Veterans, & Military Affairs `introduction`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/7f1ea1a8-848d-4855-91ce-ae9164aebf39`. Confidence: reported (aggregated from official Colorado legislature records).