The rifle is named after the Castle Carbonek, which according to legend is the Holy Grail. The title perfectly fit the rifle, its body is made of carbon fiber. Weapons shall not be subject to modification, it is already obvesano whistles. Weapons in the engineer in the locker of the alternator.

Credits:
TheKinari9 - Correction of the Russian language to English.
Master_Shifu - original mod
Thanks you for photos JJHughes :-)