How hard is it? I watched a few videos but can’t find any that show the process with great detail. I may have to replace the hammer spring in mine so trying to get enough info and courage to try it. Thanks.
If you decide to replace the spring you might consider this one. It is a more versatile one in thatI just had a MP5 built and the builder suggested maybe changing it out based on the pack I sent him with my parts kit. So I may take the spring out and examine it visually.