INTERNAL UPGRADE

Black Python BP455 455mm Tight Bore Barrel 

Black Python BP229 229mm Tight Bore Barrel 

Black Python BP363 363mm Tight Bore Barrel 

Shark Hopup Bucking was originally designed for 470 to prevent double feeding.
By having 3 special "fins" inside the bucking, Shark Hopup Bucking can hold one and only one B.B. tightly in the chamber.
In the mean time, to our surprise, we found that this bucking could enhance the velocity on some AEGs.
But not all AEGs will have the same results and the result could be different from one AEG to another.
Unfortunately, we don't know the exact reason because each AEG has its own characteristics.
However, we do believe that the friction (from 3 fins) applied onto B.B. will enhance the velocity.