I have former military and law enforcement among my tenants I'd be surprised if they do not own firearms.

Since the invention of Firearms they have been a must have for every hunter, tacticool joe and responsible individual who wants to protect their family.

I did child support collections a few decades ago and got a lien on property being sold so we got the proceeds, income tax returns, seized and sold vehicles, garnished bank accounts, firearms, tap the till of taking money out the cash register, had a person searched and their money taken, and last but not least seized a big horn sheep mount. 

Fire arms dealer?

D would require the firearm and limited to no night visits.This thread became long very fast so I did not read everything, but going back to the start, while it may be a great phrase name for the thread, I certainly do not believe it to be true.

Texas is landlord friendly and I would certainly get a person carrying a firearm to visit the property and tell them to get out or get ready.

But if I were to purchase a firearm and concealed carry license and training for the purpose of self defense, without going into the politics, could I tax deduct this expense? 

Go to someone reputable such as Tactical Response or Front Sight Firearms Training Institute.

We got that person to agree to an eviction/buyout but would never put the eviction on his record in exchange for his cooperation.The day of the sheriffs eviction,  28 people were removed from the basement along with over 300 stolen bikes. 2 firearms, a giant fish tank suspended 6' in the air.

I love target shooting with firearms and archery.