Model: 20cc Plenum Extender Extension

OAL: 2.672”

Designed exclusively for RAW HM1000x rifles with removable plenums

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Boost the performance of your HM1000x without altering regulator pressure. The RAW 20cc Plenum Extender Extension increases the overall volume of regulated air available per shot, delivering enhanced velocity and energy—especially with slugs in higher-power calibers.

When paired with either the RAW Full-Sized Plenum 45cc or the RAW Necked-Down Plenum 35cc, this extension provides a simple, effective way to push your RAW rifle’s output to its full potential. In .22 caliber, it can elevate slug performance to power levels comparable with .22 LR—without adjusting the regulator.

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20cc Plenum Extender Extension

Key Features:

• 📈 Increases regulated air volume by 20cc for greater downrange energy

• ➕ Modular design—stack multiple extensions for additional volume (e.g., two extensions + 45cc plenum = 8.5” total increase)

• ➖ Extends air tank placement by 4.81” from the receiver

• 🔄 Compatible only with RAW Plenums (This is not a standalone component)

• 🚫 Not compatible with HM1000x models equipped with an integrated moderator

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Note: This RAW 20cc Plenum Extender Extension is an extension, and not a standalone plenum. Must be used in conjunction with a RAW plenum extender system.