FX Crown Caliber Exchange Set with V2 Dual Hole Transfer Port and High Flow Pin Probe

FX Crown Caliber Exchange Set with V2 Dual Hole Transfer Port and High Flow Pin Probe By Huma-Air.

This set is not compatible with the FX Crown Superlight barrel Kit; it only suits the normal barrel kits. Contact me if any questions.

This calibre exchange set with V2 dual hole transfer port and high flow pin probe makes it possible to change the calibre of your FX Crown (with standard barrel kit) with the use of your existing barrel sleeve and barrel shroud.
The set exists of a stainless-steel barrel attachment with our V2 dual hole transfer port, a liner lock nut, a high flow pin probe and the supporting O-rings for the optional FX liner inside the barrel sleeve (the liner itself is not included)

By using this kit with your existing barrel sleeve and shroud, you can change the liner of your FX Crown with a liner of the same length and a different calibre.
This set is not compatible with the FX Crown Superlight barrel kit, it only suits the normal barrel kits.

IMPORTANT NOTE:

FX uses a medium strength tread locker to fixate the transfer port to the barrel to prevent the barrel coming loose. We strongly advise you to use a tread locking adhesive like Loctite® 2400 also

Changing from a larger calibre to a smaller calibre does not require any modifications to your shroud or moderator, because the bore of the shroud and moderator will be large enough.
When you go upwards to a larger calibre, you need to check the bore of the shroud and moderator, and if needed open up the diameter of the bore of the shroud and moderator to match your new calibre;

Minimum bore diameter for a fixed shroud would be:
Cal .22 = 6,5 – 7 mm. bore
Cal .25 = 7,5 – 8 mm. bore
Cal. 30 = 8,5 – 9 mm. bore

Dual Hole V-2 Transfer Port and High Flow Pin Probe Included:

The V-shaped transfer opening makes sure you will have the maximum and smoothest air passage area. The middle support bridge divides the transfer port into a dual hole port and the middle bridge makes sure the pellet or slug nose cannot fall into the enlarged transfer port hole but will be guided smoothly by the middle bridge into the barrel.
This set also includes our stainless-steel Pin Probe.
Together, this set will give the maximum airflow behind the projectile.