Probably a dumb suggestion

[therealerhakai]

This is probably a stupid suggestion but i've seen it both used in real life and in movies, The paper bag method of hiding a gun. It would allow the players to conceal guns infront of cops etc. very nice to use for hits in a crowded area. It could be like a one time use thing that you can buy in either the hardware store etc. Idk if this would be practical but it would be cool imo

[Pendred]

Pistols are already concealed on your person. Backpacks also exist. Wouldn't serve much use.