A lot of guys, myself included, have run into retaining wires for the trigger and hammer pins in an AK and had a heck of a time removing or installing them depending on the design. I can’t tell you how many I have had challenges with over the years for one reason or another. I decimated the stock Zastava wire in my M77 the other day but I can explain that one – I now rather despise the wires and just pull them out with pliers with no plan of reusing them. Thus, I bent the heck out of the wire just yanking it out.
There is a solution to the retaining wire problem – or at least, my problem with retaining wires. About two years ago, I stopped using wires altogether and moved to the use of “plates” which are pieces of spring steel or sheet metal that simply go nose first onto the hammer, you then rotate the plate down and it engages the trigger pin and then finally the hole portion winds up aligned with the safety/selector lever hole. What this does is the plate locks up the two pins and then the selector lever locks the plate in place. They are incredibly simple to install and remove if you are doing work with the fire control group.
In terms of plates, there are basically two styles you will find. One originated with RSA and I have used these for a few years now. I only have had one problem – during installation one part of the hammer pin portion snapped right off. I called RSA and they promptly replace the plate. Kudos to them for good customer service.
A relatively newer style is from Tapco but I haven’t used it yet myself though I do have one on order for my Vepr 12 to try out. It does the same thing but has a small tab. I have big fingers and am wondering if this will make installation and removal any easier and let me point out that the RSA is a breeze to install and remove.