---
type: "Bill"
title: "Generally revise Montana weapons laws"
description: "Generally revise Montana weapons laws"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2019"
identifier: "HB 155"
citation: "Montana HB 155 (2019)"
classification: ["bill"]
subjects: ["Guns and Weapons"]
status: "enacted"
primary_sponsors: ["Casey Knudsen"]
version_count: 4
action_count: 44
vote_count: 6
first_action: "2018-10-02"
last_action: "2019-04-03"
source: "openstates"
source_identifier: "ocd-bill/43ba712a-2b6a-4394-82f6-7e0e8211741e"
source_url: "http://laws.leg.mt.gov/legprd/LAW0210W$BSIV.ActionQuery?P_BILL_NO1=155&P_BLTP_BILL_TYP_CD=HB&Z_ACTION=Find&P_SESS=20191"
source_hash: "4659813aa609510af08307b2ee6db7a3229802a8f61e45fb5a04fabff7e81d9b"
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-mt"]
---

# Montana HB 155 (2019) — Generally revise Montana weapons laws

## Version chain

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

1. **HB0155_1.pdf** (committee substitute) — [source](https://leg.mt.gov/bills/2019/HB0199//HB0155_1.pdf)
2. **HB0155_2.pdf** (committee substitute) — [source](https://leg.mt.gov/bills/2019/HB0199//HB0155_2.pdf)
3. **HB0155_x.pdf** (committee substitute) — [source](https://leg.mt.gov/bills/2019/HB0199//HB0155_x.pdf)
4. **Enrolled** (enrolled) — [source](http://leg.mt.gov/bills/2019/billpdf/HB0155.pdf)

## Votes

- BE CONCURRED IN — **10–0** (pass) · upper
- Do Concur — **49–0** (pass) · upper
- Do Pass — **99–0** (pass) · lower
- DO PASS AS AMENDED — **19–0** (pass) · lower
- Do Pass — **99–1** (pass) · lower
- Do Concur — **49–0** (pass) · upper

## Sponsors

- Casey Knudsen — primary (person)

## Timeline

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

- **2018-10-02** Draft Request Received
- **2018-12-18** Draft to Requester for Review
- **2019-01-03** Draft in Legal Review
- **2019-01-03** Draft in Edit
- **2019-01-03** Draft to Drafter - Edit Review [SMH]
- **2019-01-04** Draft in Input/Proofing
- **2019-01-04** Draft in Final Drafter Review
- **2019-01-04** Bill Draft Text Available Electronically
- **2019-01-07** Executive Director Review
- **2019-01-07** Draft in Assembly
- **2019-01-07** Executive Director Final Review
- **2019-01-07** Draft Ready for Delivery
- **2019-01-08** Draft Delivered to Requester
- **2019-01-09** Introduced `introduction`
- **2019-01-09** Introduced Bill Text Available Electronically
- **2019-01-10** Referred to Committee `referral-committee`
- **2019-01-10** First Reading `reading-1`
- **2019-01-21** Hearing
- **2019-01-24** Committee Executive Action--Bill Passed as Amended `committee-passage`
- **2019-01-24** Committee Report--Bill Passed as Amended `committee-passage`
- **2019-01-24** Printed - New Version Available
- **2019-01-28** Scheduled for 2nd Reading
- **2019-01-28** 2nd Reading Passed `reading-2`
- **2019-01-29** Scheduled for 3rd Reading
- **2019-01-29** 3rd Reading Passed `passage, reading-3`
- **2019-01-29** Transmitted to Senate
- **2019-01-30** First Reading `reading-1`
- **2019-01-30** Referred to Committee `referral-committee`
- **2019-03-12** Hearing
- **2019-03-14** Committee Executive Action--Bill Concurred
- **2019-03-14** Committee Report--Bill Concurred
- **2019-03-18** Scheduled for 2nd Reading
- **2019-03-18** 2nd Reading Concurred `reading-2`
- **2019-03-19** Scheduled for 3rd Reading
- **2019-03-19** 3rd Reading Concurred `passage, reading-3`
- **2019-03-19** Returned to House
- **2019-03-20** Sent to Enrolling
- **2019-03-21** Returned from Enrolling
- **2019-03-21** Printed - Enrolled Version Available
- **2019-03-26** Signed by Speaker
- **2019-03-26** Signed by President
- **2019-03-27** Transmitted to Governor `executive-receipt`
- **2019-04-03** Signed by Governor `executive-signature`
- **2019-04-03** Chapter Number Assigned

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/43ba712a-2b6a-4394-82f6-7e0e8211741e`. Confidence: reported (aggregated from official Montana legislature records).