Thomas Massie is awesome! About as pro 2a as you can get.
He is a retired engineer that did extemely well for himself, built an incredible off the grid timberframe home in his home county in Kentucky and then decided to run for congress.
Engineers tend to look at things in a very black and white manner, unlike most politicians that are attorneys who blow with the wind.
To my knowledge, Massie has been uncompromising in his 2a views.