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The DPX Rim-X Bolt Head Mod is our upgrade in reliability for the Zermatt Rim-X 22lr Action. This is a service and NEW modified Rim-X bolt head that we have installed our in house custom CZ457 extractors and upgraded C clip. This upgrade can still utilize your factory bolt head and modified barrel if needed. We have tested this extensively and found this extraction system to be the most reliable with increased spent case / live round ejection. We have limited slots availiable for machine time, so don't wait!


See video demostration here:

YouTube Video


This service includes:

1 (one) Custom Rim-X bolt head that has omitted factory Zermatt extractors in lieu of our CZ457 extractors.

Our in house DPG Custom CZ457 extractors re profiled wire EDM cut extractors made from S7 tool steel specifically designed to handle shock and wear from hard use. These extractors bite hard!

Our in house DPG CZ457 enhanced Extractor Spring with 30% spring rate increase

Extractor relief cuts professionally machined on our brand new DN Solutions Turn Mill CNC

Test and function of system



Client is responsible for secured shipping to and from our FFL

1-2 Week Turn around on completed rifles/barreled action


This modification forfits your warranty with Zermatt (ZAI) arms. DPG However, warranties our own


DPX Rim-X Bolt Head Mod

Out of Stock
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