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BC Custom

BC Custom - Carbon Fiber Shroud & Tensioner Kit, FX Crown MKII w/ 14mm barrel, 500mm

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BC Custom Carbon Fiber Shroud & Tensioner Kit for FX Crown MKII w/ 14mm Barrel, 500mm - Enhance Your Airgun's Precision


Enhance the performance of your FX Crown MKII with the BC Custom Carbon Fiber Shroud & Tensioner Kit, designed specifically for the 500mm, 14mm diameter barrel. This collaboration between Bullet Central and Ernest Rowe aims to significantly lighten your airgun's barrel while increasing its stiffness and rigidity, leading to improved accuracy and handling.

What's Included in the Kit

  • Tension Nut: Secures the assembly, providing stability and alignment.
  • Carbon Fiber Shroud: Increases the barrel's stiffness, enhancing accuracy while maintaining a lightweight profile.
  • Tensioner: Applies necessary tension to boost barrel rigidity, essential for consistent, high-performance shooting.

Choosing the Right Kit

  • With Clamp: If your FX Crown MKII includes a clamp, opt for the tensioner kit with a clamp to ensure a secure and optimal fit.
  • Without Clamp: For FX Crown MKII models without a clamp, the standard tension kit is recommended. It is essential to select the correct kit based on your airgun’s configuration to ensure proper installation and functionality.

Installation Guide

  1. Remove Existing Barrel: Begin by unscrewing and removing the barrel from your FX Crown MKII.
  2. Identify Tensioner Ends: Locate which end of the tensioner has the recessed cut — this should face downrange when installed. The end without the cut slides first towards the rifle.
  3. Install the Tension Nut: Attach the tension nut to the recessed end of the tensioner. Use a 2mm Allen key to tighten it securely, ensuring it is well-fastened.
  4. Attach the Shroud: Slide the carbon fiber shroud over the tensioner. The included O-ring ensures a tight fit, crucial for maintaining an effective air seal.
  5. Secure the Shroud: Screw the shroud onto the tensioner nut until it is snug and fully secured, checking for proper alignment.

Benefits of the Carbon Fiber Tensioner and Shroud

  • Weight Reduction: The use of carbon fiber significantly reduces the overall weight of the airgun, enhancing maneuverability and ease of handling.
  • Increased Stiffness and Rigidity: By adding stiffness to the barrel, this kit minimizes vibrations and maximizes accuracy, making it ideal for both competitive shooting and hunting.


The BC Custom Carbon Fiber Shroud & Tensioner Kit for the FX Crown MKII with a 500mm, 14mm barrel is an essential upgrade for airgun enthusiasts looking to optimize their shooting experience. This kit not only improves the structural integrity and stability of the barrel but also boosts precision and handling, making it a valuable investment for competitive shooters and serious hobbyists alike. With its superior design and high-quality materials, this kit ensures your FX Crown MKII performs at its highest potential, delivering reliability and enhanced accuracy with every shot.

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Additional Information

.177 Cal - .30 Cal
500mm Barrel
Model / Type:
Crown MKII
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