Jay - It's a factory weight spring (17 lbs. I think) captured on a stainless steel guide rod. I got it from the Glock Store. I wanted to try the factory weight spring before I upgrade to the heavier ones. It's working okay so far.
Shadow.....Yes please, post any new info you can get. It's your data that got me started down the 9x25 road.
Last edited by Gun-adian; 05-21-2010 at 15:11..