Gun owners are being invited to hand in their unwanted weapons to police during a two-week firearms amnesty.
Both Humberside and Lincolnshire Police are participating in a national scheme aimed at removing firearms from the streets.
During the amnesty, any unlawfully held firearms and ammunition, including replica firearms, air weapons, BB guns, imitation firearms, component parts and other ballistic items may be handed in at police stations across both force areas.
The amnesty in Humberside runs from 8am on Saturday and 8pm on Sunday, November 16.
Weapons can be handed into five police stations, including Grimsby.
In Lincolnshire, the amnesty runs from Monday until Friday, November 14.
Weapons can be handed into Lincoln, Grantham, Boston and Skegness police stations,
In Lincolnshire, members of the public are asked to contact the relevant police station by calling 101 to inform staff in advance that they will be handing a weapon in.
The amnesty comes just a week after Humberside Police praised a woman for handing in a firearm – which turned out to be a BB gun - at an East Marsh ward councillor's surgery after she found it near Freeman Street Market in Grimsby.
Chief Inspector Neil Pattison, of Humberside Police said: "The two week firearms surrender is a local campaign aimed at local people in the community who may wish to safely dispose of a firearm.
"Whilst we do not have a big problem with gun crime across the Humberside Police area, this is an excellent opportunity to get as many guns off the streets and out of potential criminal circulation as we can so they do not fall into the wrong hands.
"Licence-holders can be reassured that these measures merely enhance their rights and privileges to own firearms, by removing the dangerous ones from the wrong hands. Licence holders are also encouraged to use this amnesty to consider the surrender of weapons they may no longer have a use for.
"The surrender does not provide immunity from prosecution for the life of a firearm. It is intended to provide an amnesty for possession of the firearm at the point of surrender/handover to a lawful authority.
"Thus, any possession or use of the firearm, prior to surrender, may be the subject of an ongoing investigation and as such police may still consider prosecution."
A spokesman for Lincolnshire Police said: "Gun crime within Lincolnshire is statistically low, which is a result of continued efforts from the Force.
"An amnesty has not been held by Lincolnshire Police for nearly ten years. It is just one of a number of measures that is being used to further reduce crime.
"Members of the community can be assured that the amnesty is not being held due to a rise in gun crime, and they also should not be concerned that the amnesty will be an excuse for people to walk around freely with firearms."