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BC Custom

BC Custom - Hyperbloc100 and Valve Housing Upgrade for FX Impact M3/M4

(3 reviews) Write a Review
SKU:
APBC0078
$349.00

Description

Upgrade your FX Impact M3 or M4 with the BC Custom Hyperbloc100 and Valve Housing Upgrade. This premium kit is designed and engineered for enhanced performance and reliability, offering a precision-fit solution for those seeking to get the most out of their air rifle.

  • Adds a full 44cc bringing your plenum capacity up to 100cc
  • Compatible with FX Impact M3 and M4 models
  • Kit includes upgraded valve housing for enhanced performance
  • Precision machined on high tech equipment 
  • Allows the marksmen to obtain same velocity with 10 to 25 bar less regulator pressure
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3 Reviews

  • 4
    hyperbloc100

    Posted by nick merolli on Mar 26th 2026

    very well made lots of thoughts went into this does what it supposed to and then some.. now awaiting another..

  • 4
    hyperbloc100

    Posted by nick merolli on Jan 21st 2026

    very well machined plenum works as should

  • 5
    hyperblock100

    Posted by dominic civiletti on Jan 15th 2026

    good product! Fast delivery!

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