That’s the cynical take, sure. But you must acknowledge there is a non cynical take. I’m so inclined to believe this is influence buying until I see that presented as the only possibility.
Quote from elizabethwarren.com:
I will break the NRA’s stranglehold on Congress by passing sweeping anti-corruption legislation and eliminating the filibuster so that our nation can no longer be held hostage by a small group of well-financed extremists
That isn't limited to guns or because of the gun lobby. It's because moderate Republicans might as well be Democrats.