Well the one thing carcano's have in common is that all variants where infact, common
You ofcourse have the main infantry rifle, the Modello 1891. Used by frontline troops
The M1891 Moschetto da Cavalleria with integrnal Bayonet,
Production=
BRESCIA 1893-1919
BRESCIA (F.N.A. Brescia) 1932-1942
TERNI 1928-1938
BERETTA 1935-1943
GARDONE VAL TROMPIA 1935-1942
This one was origenally for cavalry, motorcycle troops and such but also for engineers,supply personell
This one is the most common Carbine PRE WW2. Production After 1935 all became modello 38's with fixed rear sights and the typical red wood
The Moschetto per Truppe Speciali Mod. 91 was reserved for machine gun crews, mortar crews, artillery personell
BReSCIA 1898-1919
TERNI 1928-1929
BERETTA 1928-1938 (compresa la produzione civile)
GARDONE VAL TROMPIA 1928-1938
PIETRO LORENZOTTI 1930-31
M.B.T. Metallurgica Bresciana Tempini 1930
F.N.A. Brescia 1931-1938 (compresa la produzione civile)
CANNA (visualizzazione flash) (visualizzazione html)The Moschetto di Fanteria Mod. 91/24 in turn was a modification of the origenal moschetto M1891
The moschetto di fanteria M91/24 was only produced=
TERNI 1924 -1929
So i would dub this one as less common
The grenade launching carcano was also decently common. In theory issued one per platoon
http://www.il91.it/il91.htmlThe modello 38 in 7.35 was produced for several years, but in large numbers by many companies. Same goes for a Truppi speciali model with folding bayonet. These have the Red wood commonly.
After 1940 modello 38 production went back to 6.5x52 carcano. These are often found with standard beech wood.
Fucile(Infantry rifle, already ingame, Moschetto Truppi speciali (shorter then infantry rifle) and Moschetto (Folding bayonet integral). These where all again produced in rather large numbers. Again produced by many companies
And then finnaly the M91/41 carcano. Shorter then origenal Carcano infantry rifle, longer then modello 38. Produced from 1941 till 1945.
TERNI 1941 -1943
ARMAGUERRA CREMONA 1942 -1945
So it is difficult to say, wich one was more common. Because they all appeared. The sole carcano collector i encounterd on militaria fairs, said that for every 1.5 infantry rifles produced, one carbine model was produced.
Some notes however
-7.35x51mm Carcanos where NOT issued to North africa (They where issued to East front italian troops)
-There are NO true sniper versions, only a handfull of prototypes or self made sniper rifles
The best site i found about the Italian carcano, is this one
http://www.il91.it/il91.htmlBut it is in italian.