Pvt! You have dis-honored your di!
Did I NOT tell you how to DETAIL your RIFLE! A CORRODED FIRING PIN!!
Drop and give ME FIFTY for NOT Detailing your RIFLE and FIFTY more for NOT FOLLOWING INSTRUCTIONS!
GET some "DILL Pipe cleaners, (with stiff bristles amongst the others) and detail that FP channel and replace the FP with new, that's lightly lube with THIN film of grease.