Was going to do the LEM trigger. Was notified by HK website they were avail, looked at the the price and remembered frustrated I get working on guns and passed. HK parts are pricey but in this day and age, if you want something, you had better get it now.
I've added a Jarvis threaded barrel, HK adjustable suppressor night sights, some non slip tape, streamlight light/laser and a rugged obsidian 45 suppressor.
Had another one that I had converted to 460 Rowland that I gave to my son.
Great guns.
Paul