These Congressmen support NRA's bumpstock ban:

[Matt Collins]

https://curbelo.house.gov/news/documentsingle.aspx?DocumentID=1706

Carlos Curbelo (FL-26)

Peter King (NY-2)

Leonard Lance (NJ-7)

Patrick Meehan (PA-7)

Ed Royce (CA-39)

Chris Smith (NJ-4)

Erik Paulsen (MN-3)

Ryan Costello (PA-6)

Ileana Ros-Lehtinen (FL-27)

Charlie Dent (PA-15)

Democrats

Seth Moulton (MA-6)

Jared Polis (CO-2)

Robin Kelly (IL-2)

Jacky Rosen (NV-3)

Beto O’Rourke (TX-16)

Matt Cartwright (PA-17)

Tulsi Gabbard (HI-2)

Ruben Kihuen (NV-4)

John Delaney (MD-6)

Gene Green (TX-29)



And it looks like Georgia's two Senators are for it too:
http://politics.blog.ajc.com/2017/10/10/georgias-two-republican-u-s-senators-open-to-bump-stock-ban/

[Raginfridus]

Mostly coastal, including token Illinois and a dude from Colorado.

If the parties were split by geographic regions and not by effervescent buzz words, we could start to have something like representation.

[Matt Collins]

Many Ron Paul supporters helped Paulsen in MN get elected, and they are pissed now

[Danke]

https://www.youtube.com/watch?v=sCLoIorYguU

[tommyrp12]

https://i.imgur.com/fWfOrl7.jpg

[brushfire]

As mentioned in the video Danke posted, the legislation is vague and extends well beyond bumpfire stocks. The proposed legislation is actually a reach on semiauto and self loading firearms.