This is a $200+ trigger, and it is awesome even though I haven't gotten any shooting time as yet. Replacing the stock Xmark was easy. The tab for bolt release was not quite matching the groove of bolt release level, so a little bending with a long nosed plier fixed that. The package came with it was labeled 1lbs, but I think it was much less, in the order of a few ounces, probably because I lube it with FrogLube. Aim the cross hair, the put a slight pressure on the trigger and it breaks consistently sharp. They gave 2 more springs, supposedly for different pull weight ranges, but I think the installed one is very good for me. End result on installation: aim cross hair, slight pressure on trigger as light as trying to feel the texture on trigger metal, and it fires while the cross hair does not move! Installation Tip: - Unbolt and release stock, release the bolt. - tab out the forward pin holding trigger assembly first - tab out the rear assembly pin but not all the way out, keep the bolt assembly lever and spring in place - insert the new Jewell front end first and work the front pin in - the swing back to work the back pin - fix the bolt release tab with a long nose plier - test with inserted bolt to see if how easily will trip: check pull weight, shock the action with rubber mallet. Make necessary adjustments. - lube the bolt release lever and its slot in the action. Assemble the stock. Done.