Define Blastmaster Meaning

Mikey: "Yeah bro, I was with this boning chick last night and I totally gave her a good old raider blastmaster. It was pretty sick."
Jim: "Dude noice"

Twisting the strangle grip
Won't give no mercy
Feeling those tendons rip
Torn up and mean
Blastmaster racks the ground
Bent on survival
Full throttle hammers down
A deadly scream

All Guns, All Guns Blazing!

(Judas Priest - All Guns Blazing)