buttons
Notably, as described above, the six-position-sight-pistols do have a considerably stronger (recoil) spring, the leafs being 1.05mm and 0.80mm thick, compared to the then standard pistol spring, both leaves of which are 0.77+/-0.02mm thick; the fixed sight pistols, however, have the standard spring, indicating perhaps that they were not intended to be used with the more powerful carbine ammunition.
The above comments in italics were excerpted from Pistole Parabellum, volume 1 chapter 7, page 2024. Essentially stating that the possibly 20 to 50 second trials Chilean production prototype, fixed rear sight carbine pistols have standard recoil springs, inferring that 10044 uses standard old model 1900 production, equal thickness recoil springs. The use or fitting of standard production recoil springs, apparenty, is not consistent throughout the fixed rear sight serial number range as the subject second series Chilean production prototype 10035 has Riband dual recoil leaf springs, dimensionally, almost identical to 10003, a six-position rear sight, first series Chilean carbine prototype. Since the only difference between the two Chilean Luger pistol variations is the multi-position rear sight vs. the fixed position rear sight, does not affect the ballistics, therefore the fixed rear sight variation would/could use the same higher load, blackened 471A ammunition, as specified in the 4 page supplemental Spanish flyer. Also since the packaging of the DWM ammunition provided with the Chilean Trials Prototype and production Prototype fixed rear sight carbines is not known, and as suggested by Pistole Parabellum, for the fixed rear sight variation, although unlikely, could have been standard commercial 471A loadings. As such 10035 is pictured with a very early, short lived 1901-1904 standard 50 round box of DWM commercial, Deutche Metallpatronenfabrik (*DM*K) 471A head stamped ammunition, coincidentally, with no loading information on the box cover.
