You are correct. I just found in the regulations that the guns are owned and supplied by the officers themselves. As to the guns being turned in, it is not very clear from the regulations.
Here is what the MPD Regulations say--it is kind of nebulous:
http://www.ci.minneapolis.mn.us/police/policy/mpdpolicy_7-800_7-800
The following procedures shall apply to managing Witness and Involved Officers following a Critical Incident:
Involved Officers
At the scene:
As soon as practical, the Escorts shall take the Involved Officers from the scene to the designated drug and alcohol testing collection site, as determined per MPD P&P 3-1001 Drug and Alcohol Testing Policy. After test samples are obtained, the Escorts shall transport the Involved Officers to Headquarters-Involved Officer’s Room. Escorts shall keep the Involved Officers separate from other Involved and Witness Officers. (04/21/09) (07/21/16)
Unless a supervisor has a reason to believe that the officer may pose a threat to himself/herself or to others, or unless directed by the Investigators, the Involved Officers’ firearm should not be taken at the scene.
If requested by Investigators, Involved Officers shall make themselves available for a firearms inspection and shall surrender his/her firearm and any other requested equipment to them. Homicide Investigators will take custody of the Involved Officer’s firearm, place it in a paper bag, and put it in the evidence locker in Investigative Headquarters if Crime Lab personnel are unavailable to take immediate custody of the weapon.
The evidence locker will be locked immediately after the firearms are placed inside. Crime Lab personnel will remove the officer’s handgun from the locker and process per SOP.
Involved Officers shall be provided with replacement firearms and equipment as soon as reasonably possible.
Involved Officers shall be allowed a reasonable opportunity to consult with Federation representatives, legal counsel, Community Chaplain or other clergy, and MPD Employee Resource Program personnel.
After meeting with counsel, Involved Officers who so request shall be given an opportunity to meet with an Assistant City Attorney, if appropriate, and shall be given reasonable time to do so. (07/21/16)
After consultation with legal counsel, the Involved Officers or legal counsel will inform the Lead Investigator or designee if the Involved Officers are willing to give a Voluntary Statement. Voluntary Statements should be given as soon as possible, but in all cases within 48 hours of the Critical Incident to ensure the continuity of the investigation unless the involved officer is not able to do so. Involved Officers statements shall be given at Investigative Headquarters or such other location chosen by the Lead Investigator. All statements from involved officers will be taken in question and answer (Q&A) format.