Well I got the stock assembly today. The A3 buttstock is the size of a monkey fist. This think just looks like it will hurt and slip up on my shoulder,. Maybe hit my jaw and rattle something loose. Do they make a buffer pad assembly that goes over this? Maybe something that has some actual padding instead of the meat grater hardened rubber thing they got on there now. Mine came from WhatACountry and is an actual HK, dated 1966, looks new, but has a gray park finish. Fits tight but not sure if I'll use it. I got buffer from Bill Springfield for it but have no idea how to take it apart. Anyway, a recoil pad would be good if anyone can point me in the right direction.
FYI- I also got one of his drop in trigger groups, it's very light, no take up, more of a target trigger than a combat trigger.