The phrase "illegal guns" refers to firearms that are used or possessed unlawfully, without proper authorization or permission from the government. Full definition
And his heroic fight against illegal guns has made the mayor a national leader on the issue. (brooklynpaper.com)
The legislation is not a full repeal of the law, which also dealt with the use of illegal guns as well as strengthening penalties for those who kill first responders. (nystateofpolitics.com)
The shadow minister for home affairs has promised that a Conservative government would preserve the right for people to legitimately possess firearms while cracking down on illegal gun culture. (politics.co.uk)