I've heard enough...
For all you worry warts just install this and be done with it.
Prior to the introduction of the S.F.S. system, the single action 1911 or the Browning Hi-Power could be carried in three modes:
1. Chamber empty, hammer down.
2. Chamber loaded, hammer down.
3. Chamber loaded, hammer cocked, safety locked.
To eliminate these three methods of carrying the Single Action pistol, the double action pistol mechanism was developed, allowing the hammer to be cocked by pulling the trigger. However, a double action pistol requires a heavier trigger pull and a longer movement of the trigger. This can be detrimental to accuracy because the different positioning of the trigger for the first shot may disturb the shooter. To offer a safer weapon, some manufacturers introduced an additional manual safety which made handling the pistol more confusing.
Browning High Power
SFS Browning HP Operation
The S.F.S. System eliminates all three of these carry modes and the problems associated with a double action pistol, creating a safer method of carry, faster use, and better accuracy. The S.F.S. system allows the pistol to be carried with the chamber loaded and the hammer down. When the pistol is carried in this condition, the hammer is locked, the sear is locked, the slide cannot be opened, and the trigger is locked.
The SAFETY FAST SHOOTING system combines the advantages of both mechanisms while eliminating their drawbacks. Available as a kit, it can be fitted into an existing pistol. The S.F.S. system is a drop-in kit.
The 1911 S.F.S. kit can be installed in a series 70 or series 80 style 1911. When installed in a series 80, the firing pin lockout system is still fully functional. The Browning Hi-Power S.F.S. kit can be installed in the new MK III Browning Hi-Power or the pre MK III Browning Hi-Power and the various clones. When installed in a MK III Browning Hi-Power, the S.F.S. kit retains the firing pin lockout system. The S.F.S. system does not eliminate the magazine disconnect on the Browning Hi-Power.
With the three safeties activated the S.F.S. allows the hammer to be cocked, and the safeties are then deactivated by simply pressing the ambidextrous safety lever with the thumb. The trigger pull remains light and accurate, allowing a very fast first shot.
Today, the Safety Fast Shooting kit is available for the Browning Hi-Power style pistols and 1911 style pistols.