Members of Congress who sponsored or co-sponsored gun legislation this session

Below are the 503 lawmakers, 94 percent of Congress, who sponsored or co-sponsored gun legislation this session. See how your members of Congress have contributed — and how they have been rated by the National Rifle Association.

Since 2015, members of Congress have proposed 100 civilian-focused gun bills, 56 aimed at increasing gun control and 44 that attempted to expand or protect Second Amendment rights. None have passed both houses.

NRA ratings are assigned by the organization each election cycle to almost every Congressional candidate. Ranging from A-plus to F, the ratings, based on legislative records and responses to an NRA survey, signify how strongly aligned a candidate would be with the NRA’s policy agenda.

Nineteen lawmakers — nine Republicans and 10 Democrats — sponsored legislation that broke party ranks.

Only nine lawmakers out of 503 sponsored both gun control and gun rights bills.

Two bills had more than 150 co-sponsors: H.R. 986, which would let nonresidents of a state to apply for a conceal and carry permit, and H.R. 1217, which would improve the quality of background checks without narrowing the pool of people who are eligible to buy guns.

Only one legislator who sponsored primarily gun control bills got an NRA grade in the A range — Cheri Bustos (D-Ill.), who earned an A-minus.

Five legislators who sponsored more gun rights than gun control bills found themselves below the A range, including former presidential candidate Sen. Marco Rubio (R-Fla.).