Hey guys I'm going to order some upgrades for my Glock 19. I want a 31 round magazine, 3.5 pound trigger and a new guide rod and spring. I noticed the glock trigger is on back order but they have this. 58864 Scherer made 3.5# connector 14.95 Anyone ever use the scherer trigger connector? Is this all I need, and how hard is it to install? Also, is it worth it to upgrade the guide rod and spring? I was originally kind of worried when I found out the gun came with a plastic guide rod initially, but it must work if they continually use it. Any other cheap upgrades I can do to the gun to improve it? Product ID Description Price Remove 42280 STAINLESS STEEL CAPTIVE GUIDE ROD FOR GLOCK MODELS 19,23,25,32 $18.96 42297 ISMI FLAT WIRE RECOIL SPRING. 18 POUNDS FOR GLOCK MODELS 19,23,25,32 $6.95 42680 33Rd Black 17/34 9MM Glock Mag $29.86 3 items in cart totaling $55.77 Thanks guys.