For GSG and Swiss Arms Railed Pistols Should you own one of the GSG SB 1911 Tactical models, a 922 or either of the Swiss Arms pistols, take full advantage of the lower rail by adding the GSG Bridge Mount! With the addition of a GSG Bridge Mount you now have the possibility to accessorize both the top and bottom of your firearm. Scopes, laser adapters, flashlight adapters? you name it! Open your firearm to a new world of personalization.