From the start the Caldaron had problems. It tried to be too much to too many people. The Heavy Pistol ammo gave it too much punch for use where they did not want stray shots punching through walls. The scope was useless in most urban ranges. The attempt to offer two targeting systems was overkill. The gas vent was not as efficient as one would have liked. And the worst part, the performance of the weapon was average at best. OK, so why should you take one? First, for the price, you get quite a lot of extras that can be reused on other weapons. Second, if you need a lot of heavy fire power in a small package, then it could do the trick for you. Last, it is a great "starter" platform for a custom weapon.
I used the Caldaron as a base for a special needs, conceal carry weapon I offer. The small frame size allows it to be very concealable. I used one to make an excellent carry weapon for one body guard customer of mine. I offed the scope, upgraded the Gas vent, and took out the laser. I replaced the laser with an internal Ultrasound and cross linked it to the smartgun link. I then worked on the action and grip, cleaned up the fireing mechanism, and reworked the balance slightly by adding some weight to the handgrip. My client said not only was he suprised, but it is his favorite SMG now.
Here is the weapon as I sell it. I think if you take a look you will find the Caldaron is not a bad little weapon.
Manex Caldaron Special (Elmo's Edition) - SMG +2 J R 11mm 21 15 ST 100m 900eb (+250eb labour)