My first gun exposure was with the Boy Scouts, sponsored by my parish in Baltimore City. I hunt, I teach/taught firearms safety and marksmanship in the Marine Corps and the U.S. Army and still do, as well as compete and coach youth and Olympic style shooters. I don’t think guns are inherently evil and feel people have the right to own and use guns for sport and self-defense. And I do believe things like background checks and restrictions are called for, for certain people, under certain conditions, mental or abusive related factors, do factor in. I do believe that protecting the innocent through the use of guns would be or should be sanctioned by the Church, here and in missionary lands but that’s a personal opinion. I had no compunctions about protecting Catholic or Buddhist villages from Viet Cong attacks during my tours of duty in Nam. It was simply the right thing for a Marine to do. Catholic or not, these questions have to be asked of any Marine, military person or law enforcement professional, "can I, should I, will I, shoot or kill if necessary?
Consider that before you purchase a firearm or it may be taken from you and used against you or others. You don’t want that on your conscience. It’s your responsibility to keep your firearms away from those not qualified or restricted from their possession/use.
The same applies to self-defense/home-defense. Even if your shooting choice is simply target shooting, like tin cans on a fence, keeping your firearms from criminals may bring up the issue. While you contemplate that issue, please Google up: “Saint Gerard Possenti” or “Weapons of the Vatican’s Swiss Guard”. Firearms do save lives. Realize that we don’t live in a perfect world, Good people are forced to counter evil ones on a daily basis with whatever means are available and functional. Guns and more defended the globe from Nazism/Facism/Communism a number of times where freedom of choice would have been denied the masses. Remember that also every time you thank a veteran for their service. You must also respect their use of firearms to guarantee your freedoms.