I believe the upper image is an ambidextrous application ?
One way to make it easier to rack a slide is to put your gun up with the slide locked back. It will gradually weaken the spring and help with racking.Install a lighter weight recoil spring assembly. There are both captured and non captured aftermarket guide rods that will allow you to use a Wolfe reduced power recoil spring tuning kit. That will do it.
Recover Tactical charging handles are great. Racks very easy.Is there an after-market part that can make the Glock 17 (Gen 3) slide a bit easier to rack? (The slide on my Sig P226, by comparison, is smooth as butter.) This is not only a comfort issue. It could also be a life-or-death issue, if someone were in a shootout, say, and needed to rack the slide, especially with sweat, blood, rain, seawater, or sand on the hands. Thanks for your help.