Model: Necked-Down Plenum Extender 4.433” OAL
Volume: 35cc
Length Added: 3.69” from receiver
The RAW 35cc Necked-Down Plenum Extenderis engineered to increase the performance of the HM1000x platform without requiring adjustments to the regulator. By expanding the available volume of regulated air, it delivers increased energy per shot—particularly effective with slugs. In .22 caliber, this extender can elevate performance to levels comparable to .22LR, all while maintaining factory regulator settings.
Optimized Fit for LRT Stocks
This slimmer, longer version of the RAW plenum system is specifically shaped to fit within the wood laminate LRT stock and compatible aftermarket chassis. The reduced diameter clears tight tolerances while still boosting internal air volume.
35cc Necked-Down Plenum Extender
Key Features:
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📈 Increases regulated air volume by 35cc
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➕ Adds 3.69” to tank offset from receiver
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🔄 Compatible with the 20cc Extension Module for further power enhancement
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✅ Designed for use with RAW HM1000x rifles in wood laminate LRT stocks
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🚫 Not compatible with HM1000x rifles featuring the integrated moderator
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⚙️ Fits all unmoderated and standard HM1000x barrels
🔁 For use with the RAW aluminum chassis system, see the Full-Size Plenum Extender.