terrydoc, I got my M3K about a month ago and have been thinking the same, and as a fellow Aussie its hard to find any parts for these. Something you could try is locking the bolt back, which would compress the recoil spring, then leave it in the safe for a while which would soften the spring up a bit (happy to be told that's incorrect though), its a rather heavy action as standard, also have you polished the mag tube that the spring rides on? This will help smooth up the action a bit but not necessarily make it lighter. One of MOA's light recoil springs would be a great addition, along with a trigger spring kit. Looking into the possibility of getting that sent to Australia, its taken a lot of research to make sure its not breaking any laws, but now just need to get it sent.