http:/
mangastream . com
/read/bleach/89889984/18
Takes place in bleach chapter 455 page 18
Ichigo had just hit the ground and but when he was rolling on the rooftop he reached into his coat and pulled out a 9 mm pistol taking the safety off and aimed straight at Tsukishima pulling the trigger and firing five rounds at the former leader of Xcution.
Hitting him twice in the head and three times in the chest. He landed with a loud thod on the rooftop moving across it several feet before coming to a stop blood pouring out of his body ichigo got up and fired two more rounds into his haed. And said"oh I'm sorry did I interrupt you. " Then kicking him across the face" no one attacks my friends and walks away in nothing less than a body bag." Ichigo began walked away but stopped shortly before exiting down the fire escape "Ginjo see you tomorrow to continue my training" and then continue to make is way down the fire escape stairs.
Leaving a stun Ginjo and Chad.
I honestly believe Ichigo would have a gun because of all the people that have attacked him during his teen years just in case someone brought a gun as well.