Just got my FDE Gen 4 Glock 20 and have some questions about the setup. I know that shooting constant hot loads in earlier generations require a change to a heavier spring but what about the gen 4. I haven't Found any spring assemblies available. Is it necessary with the gen 4's new spring assembly design to increase the spring weight? My other question deals with fixed sights. Will fixed sights give the accuracy needed for hunting. If they do what sight do you suggest. This is my first glock after a long time of sitting on the fence. The 10mm was the right choice for hunting because I shoot semi autos better than revolvers. Any suggestions will be greatly appreciated.