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BC Custom

BC Custom - Carbon Fiber Shroud & Tensioner Kit, FX Crown MKII w/ 14mm barrel, 600mm

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BC Custom Carbon Fiber Shroud & Tensioner Kit for FX Crown MKII w/ 14mm Barrel, 600mm - Precision Barrel Upgrade


Elevate your shooting capabilities with the BC Custom Carbon Fiber Shroud & Tensioner Kit for the FX Crown MKII, designed specifically for the 600mm, 14mm diameter barrel. Developed in collaboration with Bullet Central and Ernest Rowe, this kit is engineered to reduce the weight of your airgun's barrel while increasing its stiffness and rigidity, enhancing overall accuracy and performance.

What's Included in the Kit

  • Tension Nut: Anchors the assembly, ensuring stability and precise alignment.
  • Carbon Fiber Shroud: Enhances the barrel's stiffness, improving accuracy while maintaining a lightweight design.
  • Tensioner: Applies the necessary tension to boost barrel rigidity, crucial for consistent, high-performance shooting.

Choosing the Right Kit

  • With Clamp: If your FX Crown MKII includes a clamp, choose 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's important to select the appropriate kit based on your airgun’s configuration for proper installation and functionality.

Installation Guide

  1. Remove Existing Barrel: Start by unscrewing and removing the barrel from your FX Crown MKII.
  2. Identify Tensioner Ends: Determine which end of the tensioner has the recessed cut — this should point downrange when installed. The smooth end slides on first towards the rifle.
  3. Install the Tension Nut: Secure the tension nut on the recessed end of the tensioner using a 2mm Allen key to tighten it firmly, ensuring it is well-fastened.
  4. Attach the Shroud: Slide the carbon fiber shroud over the tensioner. The O-ring inside the shroud ensures a tight fit, essential 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 lightweight carbon fiber material significantly reduces the overall weight of the airgun, enhancing maneuverability and ease of handling.
  • Increased Stiffness and Rigidity: This kit adds considerable stiffness to the barrel, reducing vibrations and maximizing accuracy, ideal for competitive shooting and precise hunting.


The BC Custom Carbon Fiber Shroud & Tensioner Kit for the FX Crown MKII with a 600mm, 14mm barrel is an indispensable upgrade for airgun enthusiasts seeking to enhance their shooting experience. By improving the structural integrity and stability of the barrel, this kit not only increases precision but also enhances 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
600mm Barrel
Model / Type:
Crown MKII
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