The 40 isn’t going anywhere. Use to be that when there were ammo shortages that the 40 was available. This time the 9 and 40 were equally hard to find. It is the game that the industry plays. I tested my K9 and my K40, both with extended ported barrels using Underwood ammo with the same hollow point boolits. Because i am a woodworker and I have a lot of baltic burch plywood cut off’s, I have the perfect balistic plywood test. Layers of 1/2 inch baltic burch plywood squares. The 9 can in no way come close to the 40 that makes a bigger hole and at least 1 to1-1/2 more pieces that it penetrates thru. At our range the police train and test to qualify. They bring out a car and shoot it up. The 9 bounces off the windshield at least half of the time. The 40 almost never does. i carry a K40 and an ankel holstered PM9 and two extra mags for the K40. It’s a different world out there. It is a time to be ready to defend your family and loved ones. I hope these days will end, but I am going to stay armed, trained, and ready. pray for our nation. If Biden would win, it would be the end of our country as we know it. Have plenty of ammo and be ready to defend our 2nd amendment to the constitution.