Legislation: batch C — MO MS MT NC ND NE NH NJ NM NV

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

legislation/us/states/mt/2021/hb-504.md

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+---
+type: "Bill"
+title: "Generally revise firearms and weapons laws"
+description: "Generally revise firearms and weapons laws"
+jurisdiction: "us/states/mt"
+legislature: "Montana Legislature"
+session: "2021"
+identifier: "HB 504"
+citation: "Montana HB 504 (2021)"
+classification: ["bill"]
+subjects: ["Guns and Weapons"]
+status: "enacted"
+primary_sponsors: ["Casey Knudsen"]
+version_count: 4
+action_count: 53
+vote_count: 7
+first_action: "2020-12-02"
+last_action: "2021-05-14"
+source: "openstates"
+source_identifier: "ocd-bill/82203f76-e338-45f7-90ed-288c52f4b8bd"
+source_url: "http://laws.leg.mt.gov/legprd/LAW0210W$BSIV.ActionQuery?P_BILL_NO1=504&P_BLTP_BILL_TYP_CD=HB&Z_ACTION=Find&P_SESS=20211"
+source_hash: "f7c6b17272385056a2c4f4788064e3ad5809c837f4a42cb2de37943b4bd78a50"
+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 504 (2021) — Generally revise firearms and weapons laws
+
+## Version chain
+
+The bill's text revisions, in order — the diff chain from filing to enrollment.
+
+1. **HB0504_1.pdf** (committee substitute) — [source](https://leg.mt.gov/bills/2021/HB0599//HB0504_1.pdf)
+2. **HB0504_2.pdf** (committee substitute) — [source](https://leg.mt.gov/bills/2021/HB0599//HB0504_2.pdf)
+3. **HB0504_X.pdf** (committee substitute) — [source](https://leg.mt.gov/bills/2021/HB0599//HB0504_X.pdf)
+4. **Enrolled** (enrolled) — [source](https://leg.mt.gov/bills/2021/billpdf/HB0504.pdf)
+
+## Votes
+
+- DO PASS — **12–7** (pass) · lower
+- Do Concur — **70–28** (pass) · lower
+- Do Concur — **32–18** (pass) · upper
+- Do Concur — **79–21** (pass) · lower
+- Do Pass — **70–30** (pass) · lower
+- Do Concur — **33–17** (pass) · upper
+- Do Pass — **67–32** (pass) · lower
+
+## Sponsors
+
+- Casey Knudsen — primary (person)
+
+## Timeline
+
+The legislative action history — every referral, reading, and vote.
+
+- **2020-12-02** Draft Request Received
+- **2021-01-22** Draft On Hold
+- **2021-02-11** Draft Taken Off Hold
+- **2021-02-11** Draft to Requester for Review
+- **2021-02-15** Draft to Requester for Review
+- **2021-02-15** Draft in Legal Review
+- **2021-02-16** Draft in Edit
+- **2021-02-17** Draft to Drafter - Edit Review
+- **2021-02-18** Draft in Input/Proofing
+- **2021-02-18** Draft in Final Drafter Review
+- **2021-02-18** Bill Draft Text Available Electronically
+- **2021-02-18** Executive Director Review
+- **2021-02-18** Draft in Assembly
+- **2021-02-18** Draft Ready for Delivery
+- **2021-02-18** Executive Director Final Review
+- **2021-02-19** Draft Ready for Delivery
+- **2021-02-19** Draft Delivered to Requester
+- **2021-02-19** Introduced `introduction`
+- **2021-02-19** Introduced Bill Text Available Electronically
+- **2021-02-19** Referred to Committee - (H) Judiciary `referral-committee`
+- **2021-02-19** First Reading `reading-1`
+- **2021-02-22** Hearing - (H) Judiciary
+- **2021-02-22** Committee Executive Action--Bill Passed - (H) Judiciary `committee-passage`
+- **2021-02-23** Committee Report--Bill Passed - (H) Judiciary `committee-passage`
+- **2021-03-01** Scheduled for 2nd Reading
+- **2021-03-01** 2nd Reading Passed `reading-2`
+- **2021-03-02** Scheduled for 3rd Reading
+- **2021-03-02** 3rd Reading Passed `passage, reading-3`
+- **2021-03-02** Transmitted to Senate
+- **2021-03-08** First Reading `reading-1`
+- **2021-03-08** Referred to Committee - (S) Judiciary `referral-committee`
+- **2021-03-16** Hearing - (S) Judiciary
+- **2021-03-16** Amendments Available
+- **2021-03-19** Committee Executive Action--Bill Concurred as Amended - (S) Judiciary
+- **2021-03-19** Committee Report--Bill Concurred as Amended - (S) Judiciary
+- **2021-03-19** Printed - New Version Available
+- **2021-04-14** Scheduled for 2nd Reading
+- **2021-04-14** 2nd Reading Concurred `reading-2`
+- **2021-04-15** Scheduled for 3rd Reading
+- **2021-04-15** 3rd Reading Concurred `passage, reading-3`
+- **2021-04-15** Returned to House with Amendments
+- **2021-04-23** Scheduled for 2nd Reading
+- **2021-04-23** 2nd Reading Senate Amendments Concurred `amendment-amendment, amendment-passage, reading-2`
+- **2021-04-26** Scheduled for 3rd Reading
+- **2021-04-26** 3rd Reading Passed as Amended by Senate `passage, reading-3`
+- **2021-04-26** Sent to Enrolling
+- **2021-05-01** Returned from Enrolling
+- **2021-05-01** Printed - Enrolled Version Available
+- **2021-05-04** Signed by Speaker
+- **2021-05-04** Signed by President
+- **2021-05-04** Transmitted to Governor `executive-receipt`
+- **2021-05-14** Signed by Governor `executive-signature`
+- **2021-05-14** Chapter Number Assigned `became-law`
+
+## Source
+
+OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/82203f76-e338-45f7-90ed-288c52f4b8bd`. Confidence: reported (aggregated from official Montana legislature records).
+