They have been trying to replace the M2 and the A10 since I joined three decades ago, but they are both truly works of art. The bastards should have learned when they got rid of the 45.
Some things just don’t need to change-the M16/AR15, though ubiquitous, never came close. They can change it anytime.
A lasting memory I have of Ma Deuce is that she will bite you if you don’t pay close attention to her head-space.