As an extra action you attach this to a gun with a successful technology, utility, or some other type of check that involves manipulating technology.
This is one of the three attachments you can have one one firearm.
Autoloader
1 Gold, Uncommon
As long as the firearm isn’t high tech or magical by any means or has any massive parts, you can fully reload the gun as a free action.
Red-Dot Sight
1 Gold, Uncommon
This firearm gains +1 to all rolls made with the firearm. This also increases any DCs the gun may have.
Silencer
1 Gold, Uncommon
Enemies can’t hear this weapon outside 100ft and they have disadvantage on perception rolls to hear the weapon being fired. this attachment cant be attached to a weapon with the Heavy Property with the exception of snipers.
Thermals
1 Gold, Uncommon
Allows the wielder to detect targets via ambient heat, even in total darkness, while you have the weapon at the ready. You no longer have disadvantage in darkness.
Laser-Dot Sight
1 Gold, Uncommon
Acts as a non damaging laser pointer, meaning you do not suffer disadvantage on attack rolls made at long range with a firearm.