The 105/28 howitzer was a World War One vintage gun of French design (Canon de 105 mle 1913 Schneider or L13 S); originally starting life as a design on the drafting board of the Russian Putilov Armaments factory. It proved a popular design and was exported to various countries, Italy among them.
The breech mechanism was based on a screw design; a swinging arm allowed the breech to swing in and out of the breech ring without having to be withdrawn axially. Upon opening the breech, a shell guide was raised from the bottom of the breech ring to assist in guiding the shell into the chamber. The 105/28 also had a number of safety features to ensure the gun wasnít discharge unless the breech was properly closed and the barrel had fully recovered from the recoil of a previous firing.
The 105/28 howitzer had a maximum elevation of 37o and could fire itís 16.3kg shell up to range beyond 12kms. It remained a common weapon during World War Two and continued in Italian service until 1943 seeing action on both the African and Russian fronts.