Date: 5/3/2024 2:10


FX Crown STX Superlight Barrel Caliber-Change Kit, 500mm .22

Main Product Rating 5.05.0 (1 review)
FX Crown STX Superlight Barrel Caliber-Change Kit, 500mm .22

FX Crown STX, Image 1

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List Price $399.99Save $100.00(25%)

Select caliber:
.177 (4.5mm)
.22 (5.5mm)
.25 (6.35mm)
.30 (7.62mm)
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Estimated in-stock date 03-19-24

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Out of stock
Estimated in-stock date 03-19-2024. Place your order now for delivery priority!

Like many FX airgun models, the Crown series can be changed to suit the user in a wide variety of ways.  One of the most appealing is their ability to quickly and easily switch between various calibers.  These Caliber Change Kits allow you to do just that!  If you bought a Crown in .22 caliber, and now you want a .30 caliber gun, all you need is the Caliber Change Kit and a magazine (sold separately.) No longer do you need multiple guns to accomplish your airgunning goals.  One gun and a few of these kits are all you need!   

The Superlight STX barrel upgrade, which weighs in around a half-pound lighter than the original STX barrels, uses a newly engineered and imagined barrel housing to hold the STX liner. The liner is no longer housed in a long steel tube, but rather is now placed in a very sturdy barrel attachment section that results in a more rigid barrel. Including an STX barrel liner, shroud and pellet probe, these Caliber-Change Kits are easy to install by the end-user.  They do require some alterations to your rifles settings, but this can be easily achieved thanks to the various external power adjustments that are standard on the Crown series.  

FX Crown STX Superlight Barrel Caliber-Change Kit

  • 500mm Superior Liner
  • .22 Caliber
  • Includes barrel, shroud, and pellet probe
  • Works on all FX Crown models
  • Additional STX barrel liners will be available with various twist rates and bore specifications

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Item Code: FX20223 [PY-A-9207]

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Caliber.22 (5.5mm)
Weight1.4 lbs

Average Customer Review

Rating 5.05.0 (1 review)
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Rating 5.05.0 5.0

Things I liked:

Very easy to change calibers on my FX Crown MKII using this caliber change kit. Directions for the change were readily available on You Tube.

Things I would have changed:

Would be nice if FX furnished a short step by step procedure for this simple job. Pretty expensive airgun to be messing with. It would be nice if a barrel thread protector was included with the caliber change kit for shipping. The kit comes in a rigid tube but the pellet probe is in a thin plastic bag loose in the tube. Even a simple gel dip type cap would work but a simple threaded cap would be better. At this price point for the airgun and the caliber change kit I doubt anyone is going to bitch about a few extra bucks for a well done muzzle cap.

What others should know:

Look over the kit carefully and make sure that there are no visible defects in the barrel or the caliber specific pellet probe. FX does some truly amazing machining but it pays to be careful. CLEAN THE BARREL BORE BEFORE SHOOTING IT.

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    Compatible with FX Crown STX Superlight Barrel Caliber-Change Kit, 500mm .22

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