
Cause if one were pro-life then it’d be assumed they want the lives of fetuses, babies, kids, teens, and adults to continue. Part of continuing life is limiting/controlling guns due to the fact in America guns are tools often used in the majority of mass casualty events (at least in the past ~20 years).
The main point in a pro life argument is to care for the life of a child. Gun control could protect the countless children and families killed, injured, and affected by school and other mass shootings. To be pro gun and pro life is respecting the unborn child more than the born child. It shows that they care more about their right to bear arms than the life of a child