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BC Custom

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

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

Out of stock

Description

Upgrade your FX Impact M3 or M4 with the BC Custom Hyperbloc100 and Valve Housing Upgrade, a precision-fit performance kit designed to enhance reliability and overall shooting efficiency. Built for shooters who want more from their setup, this anodized aluminum upgrade adds a full 44cc to bring total plenum capacity up to 100cc.

This black aluminum kit includes an upgraded valve housing and is precision machined on high-tech equipment for a refined fit and durable construction. It is designed to help marksmen achieve the same velocity with 10 to 25 bar less regulator pressure, making it a smart choice for those focused on optimizing performance from their FX Impact platform.

  • Compatible with FX Impact M3 and FX Impact M4 models
  • Adds 44cc for a total plenum capacity of 100cc
  • Includes upgraded valve housing
  • May allow the same velocity with 10 to 25 bar less regulator pressure
  • Precision machined aluminum construction
  • Anodized black finish

For shooters looking for a Hyperbloc100 upgrade for FX Impact M3 or M4 rifles, this kit offers a purpose-built solution for improved air management and dependable performance.

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Additional Information

Finish:
Anodized
Material:
Aluminum
Model / Type:
FX Impact
Color:
Black
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4 Reviews

  • 2
    HyperBloc 100

    Posted by Brooks Christensen on Apr 7th 2026

    After installation I'm giving this product 2 stars because the 4 tapped holes in the top of the Hyper Bloc 100 were slightly misaligned. After 2 hours of trying everything to get all four screws started I used a 2 mm drill bit to elongate the 4 backbone holes about a half mm so I could get the screws started. They were a very tight fit at that, but I think I got them in without cross threading or stripping them out. I didn't take it apart to find out. Disappointing that I had to remove metal off the perfect backbone of my M4 for a $350 aftermarket part. In my case the second batch also has problems. Out of the thousands I've spent on aftermarket parts this is the first miss fitting thing I've purchased.

  • 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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