Well if you've seen the norc m4, you'd quickly realize that its in no way, a decend finish on the safety. Not only that, but I find it a little more work to try to slip the trigger assemble back underneat the safety. So while the trigger assembly is out, there's also good time to give the selector switch a polish. er saftey I mean.
After I removed the safety, the rest was as easy as using the punch tool to drift out the pins. I replaced the trigger assembly with a spare DPMS LPK I had kicking around. with a quick polish job using a couple of qtips and a lot of auto polish, the trigger is fantastic now. I shall keep the oem as my spare emergency lpk.
THanks peeps for your help.