A warning has been issued to licensed firearms owners, with police expecting thefts to rise and asking people to "prevent them falling into the wrong hands".
According to Herts police, gun thefts typically rise in Autumn and advice has now been issued on how to stop them being stolen.
"We know that licensed firearm holders in Hertfordshire are very responsible members of our society," said Detective Chief Inspector James Clatworthy.
"However, this time of year, historically, has seen a peak in thefts of shotguns and licence holders need to be extra vigilant.
"Unsecured firearms represent a real threat to public safety particularly if they fall into the wrong hands.
"For this reason, I would like to remind firearm certificate holders, registered firearms dealers, members of shooting clubs and anyone involved in the shooting community to take the time to ensure their firearms and ammunition are always secure.
"For those taking their firearms to organised events, I urge that they don’t leave them in a vehicle unattended, ensure they are properly secured and locked in vehicles out of view when in transit."
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here