It is greatly dependent on what brand and year model you are using.
Hilti, for example, has improve safety on every model that they introduced. the latest models are the DX460 P8 or MX[my personal favorite] and the DX76 PTR.
The DX460 MX use magazine nails and has a twin level activation sequence before you can pull the trigger. If you are a straight shooter and received the free training from Hilti, in my opinion, this is a accident-free tool.
The same applies for the DX76 PTR. Because of the shear power of the tool, the latest feature, PTR, prevents the nail exiting the other side of the metal should the user not operate according to perscribled thickness recommendations. All info is also given with the free training you can get from any Hilti representative or Hilti Center.
It is a 6.8mm power cartridge used to power a Hilti brand powder actuated tool. The tool uses a blank gunpowder cartridge to drive metal fasteners into steel or concrete. It is not meant to be fired in a gun.
Hilti's population is 20,000.
Hilti von Allmen was born in 1935.
Hilti von Allmen died in 1966.
You can find the address of the Hilti laser manufacturer at the official website of Hilti. Go to their webpage and click on About Us and you will be provided with their address.
Hilti Power Tools such as drills, electric hammers, and additional accessories can be purchased at Home Depot Stores. Used and/or discounted Hilti Tools can also be found on the eBay auction site. To search for local providers near you, visit the Hilti Tools website and search by zip code.
I think it would be a safe bet that ALL Hilti tools and systems are patented.
Hilti brand drills can be purchased at Home Depot and other home improvement centers that are certified retailers. The Hilti website features a locator tool to assist in finding a retailer in your area. They are also listed for sale on eBay and Amazon.
Hilti Tools were originally only made in Leichtenstein, now, they are also made in Austria, Germany, USA and China.
Hilti
In the US, the general answer would be no. A captive bolt gun (commonly called a stunner or humane killer) cannot fire a projectile, and as such, fails to meet the definition of a firearm. (bolt may be driven by a powder charge, but being captive can only move a short distance) In a like manner, powder actuated tools, such as a Hilti Gun or Ramset, used to drive fasteners through wood, metal, etc into concrete are designed to prevent a projectile being fired. They may be regulated in other ways (OSHA has specific requirements for these) I am unable to comment on laws in other nations such as the UK, Canada, or Australia.
Hilti, Fischer, Bosch, Makita