What a joke. I swear you wouldn't get 18 months for possessing a gun if you were a normal civilian? Or would you?
My mate got 3 years so yer you would get that at the least
Don't see what there is to argue about, really.
He pleaded guilty to possessing an unlicensed firearm, didn't he?
The article says "The Glock was then found following a raid". Without knowing why the raid was made, I think it's impossible to judge the rights and wrongs of the sentence.
His defence would have been that he'd forgotten he had it, so he's saying he pleaded guilty to get a lesser sentence.