This is mere tokenism on the part of the NRA.
.
If they were truly representing the interests and preferences of their 
membership, we would have had universal background checks (at least)
in place post-Newtown.
.
Will they also legislate to prohibit arming the mentally ill?
.
This step (bump stocks) is to codify against an action by the ATFE.
Codify the actions of the social security administration that 
moved to bar firearm ownership for the mentally ill. 
.
This Congress and the previous, under republican leadership,
just doesn't want to do any work whatsoever unless it benefits 
the 1%.