How did McCree lose his arm?

How did McCree lose his arm? After escaping prison and defeating a robot with a lazer cutter mc cree took action as the arm lock had a tracking device. Jr ended up losing his favorite arm after mc crew used the laser cutter (the laser cutter wasn’t strong enough to cut the arm lock so he had to go option 2 ).

After escaping prison and defeating a robot with a lazer cutter mc cree took action as the arm lock had a tracking device. Jr ended up losing his favorite arm after mc crew used the laser cutter (the laser cutter wasn’t strong enough to cut the arm lock so he had to go option 2 ).