Have both LW and KKM for my G20 long slide conversion.   If I had to pick between the two, I would choose KKM.  Both seem to function  without flaw. Accuracy about the same depending on loads. The KKM has a slight edge on finish.  As a matter of fact I went ahead and purchased a 40 cal KKM barrel just for fun and am pleased as well.

Been using one of these for my G20SF long slide.  Found on ebay for about  $36.

[attachment deleted by admin]

I have the 52009 model.   Have put a few hundred full power rounds through it without any issues at all.  That is so long as I use the magazine that came with it. I have 2 more mags that I ordered from them that are absolutely worthless without significant modification. Overall love the feel, looks and accuracy for the $. By the way the original factory mag will hold 17.

I'll have some me time at the range next week to really run it through the ringer and try some new mags etc...  The one and only outing left me with a big fat grin.  By the way the factory mag holds 17 comfortably. The Advanced tactical mags hold 16.

I haven't stuffed the factory mag to max capacity yet. I was just popping in 10 rounds per target.  It's advertised as a 16 rd gun so I assume it's 15 +1.  17+1 would be excellent. Next range trip I'll function test it with full mags.  I had 2 P16 mags from advanced tactical come in yesterday.  I'll check both factory and after market mags when I get home.  I gave $623 for it at 802 traders.com    They had 5 in stock when I pulled the trigger a coupple weeks ago and less than 24hrs later they had none. 

Been lurking for the past year and a half. Finally decided to register and post. Lots of good info on this forum.  I managed to locate and purchase a RI ROCK Ultra FS HC 10mm the other day. I'm very pleased for the $.  Tried 3 different loads that I had been shooting in my G20.  It didn't seem to like either of the 2 hardcast loads at all. But went to town with the 180 XTPs. The best I've ever shot with a semi auto hand gun for sure. Can't wait to get back to the range. I have several striker fired Pistols but this is my first 1911 style.