Alright glockworx says use these and get a 2lb pull. Alright for 25 bucks who actually believes this,"not me!" Ok, installed drop in just as directed 3.3 lbs and a screechy pull. Upon inspection found the pre polished v3 connector had machine lines, so borrowed the wife's nailfile and proceeded to take the out and keep the riding surface square. Got it finished and polished all trigger parts. Retested 2.5 lbs consistent! I'm at awe, but at the same time product was not as advertised. Work had to be done to get it on par. I am very satisfied and will keep the stock springs in my rangebag. According to one of our, in my mind, weapons experts here on the odt these lighter firing pin block and striker spring will wear faster than stock parts. Overall this is the Most cost effective trigger job I have ever seen/done. I HIGHLY recommend it!