problem

[SniperSlayer]

i was trying to take off my breech, i got the front rod out but the back rod wouldn't budge, i put it back n and the thing had shifted so that it was scrapping against the front portion of the body really bad, what tools are used on these i noticed after i pulled one out with dental pics that they have threaded holes in the pins

whats the trick to getting the rear retainer rod out and how to fix my problem before it puts a nice eliptical scar on my breech