Hi,
I own two Monoscoccas (100 and 115). At my knowlage, C4 Monoscocca is the stiffest carbon speargun on the market today (and this is not an marketing ad because I own also other models of spear guns

). It is made of one single peace of carbon (handle included) so there are no joints between head, barrel and handle. The muzzle is made of titanium (as well as the triger mechanism) stamped to the carbon body in the process of making the gun (the carbon is stamped in the high preassure oven). The shape of the body is made for great manuvarbility and this is one of the best manuvarable spear guns on the market today. Position of the bends is parallel and in the same level ad the shaft so the vibrations of the bends are minimal. One of the greatest details of this gun is design of the handle whitch is positioned very high so the filing when the one holds the gun is as he holds the shaft itself so aiming is very natural and automatic. The trigger mechanism is positioned a few cm behind the trigger so the actual lenght of the loaded bends is a few cm longer than the model of the gun states (eg. on the model Monoscocca 100 the lenght of the loaded bends is around 106 cm). This is also reason why the gun is hard to load (especially in the longest version).
Efective range of Monoscocca 115 is around 6 m from the tip of the spear with one pair of the bends 20 mm and shaft of 6,5 mm. The muzzle jump is noticable because of it's light weight and strong bands (the energy of the bends is transfered completely on the shaft as there is no barrel bend). Originaly the gun is selling with the reel but without the bends, shaft and line but there is possibility to order completed gun.
If anybody needs some other detail about the gun or possibillities to buy one can contact me in private (alan@efsa.hr).