FWIW, a bit of history.
The Radom originally had a one-piece full length recoil spring guide, but a safety problem was found in testing, namely that when the pistol was dropped and landed muzzle first, it could fire. The telescoping recoil spring mechanism was designed to prevent that, and for no other reason.*
The hammer drop lever was installed for the same basic reason a manual safety was installed on the U.S. M1911 - the cavalry wanted a way to make the pistol safe when the rider had to control his horse. Same problem, two different solutions.
As to carrying the pistol, the intent was that the Radom be carried in its holster with the hammer down on a loaded chamber. When drawing the pistol, the hammer would be cocked with the thumb. In spite of the often repeated statement that the burr hammer was designed to allow the soldier (cavalryman) to cock his pistol by pushing the hammer against the saddle, I can find nothing in the Polish manual that describes doing it that way, though of course it would have worked, with the Radom and other pistols as well.
One small point - it is often written that, unlike the 1911 type, the Radom and BHP have no barrel bushings. In fact both do, except that they are screwed in and made a permanent assembly rather than the removable bushing of the 1911. Some folks believe the removable bushing of the 1911 is evidence of the design genius of John Browning but often are not quite sure of the intent. In fact, no genius was involved; the bushing, whether removble or permanent, is necessary in order to machine the breech face and the inside of the slide, which can only be done from the muzzle end by a tool larger than the barrel diameter. The bushing fills in the difference between the inside diameter of the hole and the outside diameter of the barrel. Any other "benefits" are accidental.
Jim
*Many years later, the fad for installing the worthless full-length guide rod (FLGR) in 1911 type pistols resulted in guns that would fire if dropped on the muzzle and led to requirements for firing pin locks, light firing pins and other nonsense that was not needed with the standard 1911 guide rod.
JK