Things that will allegedly "give away your position" have included:
- Tritium night sights.
- The noise of the safety on a 1911 or an AK.
- The *clack* as you release (?) the squeeze cocker on an HK P7.
- The sound of chambering a round in a shotgun or carbine that was stored "cruiser ready" (ie. empty chamber, full magazine.)
What are you going to be doing with these firearms? Laying ambushes along the Ho Chi Minh trail?
The two most likely scenarios for me to ever need to use a firearm involve my assailant knowing exactly where I am because he's either approaching me on the street, or he's in my house and he can hear me yelling for the cavalry on 911.
If you live someplace where you are in danger of people spraying AK fire at you through the walls of your domicile if you accidentally "give away your position", you don't need a quieter gun, you need a real estate agent. Either that, or stop making enemies with the kind of people that are likely to send squads of machine-gun-toting killers to your house.