A man made "chilling" threats to a police officer during a stand-off at his home when he claimed to be armed with a hand grenade and machine gun.
Jason Delaney was cornered by officers who had been searching for him after he and another man carried out a "revenge" slashing attack on a man in a pub.
During a phone call Delaney also made reference to Dale Cregan who killed two officers in gun and grenade ambush in Greater Manchester in 2012 who had been investigating a report of a burglary.
Delaney, 49, of Kingstanding, Birmingham, who had previously admitted wounding with intent and making a threat to kill, was jailed for five years, BirminghamLive reports.
Antonie Muller, prosecuting at the city's Crown Court, said that the defendant had known the victim of the slashing attack and knew the whereabouts of a man who had been sentenced for a serious sexual assault.
There had been a number of confrontations in the past, with the 72-year-old victim refusing to reveal any information and matters culminated on August 22 last year. Delaney with an accomplice had gone into a pub where the pensioner, who was "targeted," was drinking with friends.
There was a confrontation between the defendant and the man which resulted in Delaney leaning forward and head butting him in a "cowardly" attack. Both men fled from the pub and an officer had gone to the outside of Delaney's home and was then handed a phone by his daughter.
He told the officer that he had a hand grenade and said "I will smoke you and pull the pin out. I am going to blow you all up."
He then made the reference to Dale Cregan and went on "I am a dangerous geezer. I am dying and have nothing to lose. I am going to spray you."
Mr Muller said "Having heard of a live hand grenade and a sub machine gun, a firearms team were called to effect the arrest of the defendant that resulted in a siege at his house lasting several hours. A road had to be closed. When he did come out he was not armed."
Passing sentence Recorder Adrian Langdale QC said the victim had been left with an eight inch gash in his head.
He went on "In that police call you made the most appalling and abusive threats" and said that the reference to Dale Cregan was "chilling."
For more stories from where you live, visit InYourArea.
