He didn't request or demand a bump stock ban.

He specifically referenced the ATF and its public comment period.

Bump stocks, per ATF definition, do not change the functionality of a firearm from semi auto to full auto. Being semi auto or full auto has nothing to do with rate of fire, it's the actual function of whether the trigger allows one shot or more than one shot per individual activation. That is not, in any sense, what bump stocks do.

All he did, which is exactly what the NRA did after Las Vegas, was request that DoJ and the ATF review the regulations and ban devices that alter the function of a firearm from semi auto to full auto.

Bump stocks are a $400 gimmick that can be replicated by damn near anything. It's a technique and not dependent on specialized equipment.