Tuning Is a Huma slug port needed on a FX Crown?

[MEC17670]

I see there is a Huma slug transfer port upgrade for FX guns. My question is are they needed on the new Crown M2's?

Thanks, Mike

 

[18.13]

Most new fx barrels have a pellet port and a dual port except for .30 cal 

 

[Peashooter]

And .177

My Maverick only have the conventional transfer port, not ability to rotate 180 degree to a dual port here.

 

[Long_Gun_Dallas]

Flare the outside of the port to match the .30 port wheel setting, leave the center bore diameter alone, radius and elongate the inside of the port toward the barrel, and cut the probe to match. Just takes some rotary tool diamond bur bits and some patience. From what I've seen is equally effective, and in a lot of cases more effective than the large "slug" ports.