Thanks for the reply Pie, and thanks for the effort Contender. I forgot about Brownell's, they have alot of factory parts also.
The magazine disconnect is a major aggravation to me on my MKIII. Just can't get used to it, and it causes a few unmentionable words to be mumbled by me.
I think I would rather have a new MKII hammer and bushing, instead of modifying with the repacement of washers.