I have a Glock 17 Gen 5 and will soon be acquiring a Glock 45. I currently use the G17 and will be using the G45 for concealed carry and on the security team at my church. I want to upgrade both firearms to about a 4 pound trigger and also reduce recoil and muzzle flip. I'd like to hear recommendations on the best complete trigger kits and best lighter weight recoil springs and heavy recoil spring guides, and where to get them. I've gone to a number of sights where I can find these items, but they all say they're the best. Time to hear other opinions that will help me make my decision. Thanks.