The Milsig/Valken M17 HEAT CORE bolt-bumper pack contains three bumpers. The description lists 3 mm thickness and two-component industrial-grade silicone. It is a bumper pack, not a complete HEAT CORE assembly.
Material and pack quantity
The product is listed for Milsig/Valken M17. Three bumpers are supplied in the pack; the quantity does not describe the number to install in a marker. The published 3 mm thickness describes the individual bumper.
Silicone material and thickness are useful identification details when distinguishing this item from another component sold under the HEAT CORE name. The separate HE O-Ring Kit is an O-ring assortment, so its name should not be used as a description of the bumper pack.
Published figures need their context
The seller lists Shore hardness A26 and heat resistance up to 250 °C. These are attributed product specifications, not a temperature recommendation for the marker.
The listing also uses the phrase “tear strength: 500%.” No test method or measurement definition accompanies that figure in the description. Without that definition, the percentage cannot be compared confidently with another material’s specification.
A separate seller statement reports testing up to 2,000 PSI HPA outlet pressure. It is not an operating-pressure instruction for an M17 and does not establish suitability for any particular assembled system. The description supplies no test report or complete test conditions from which this guide could independently verify the claim.
The scope of this part
The contents identify three HEAT CORE bolt bumpers. They do not constitute a regulator repair kit or a complete bolt assembly. A package description can identify a part and its published specifications; it cannot diagnose every cycling symptom.
The available specifications describe the product; they do not establish an installation arrangement or performance modification.
Product details and availability
3x HEAT CORE BOLT BUMPER | Milsig Valken M17
The pack contains three silicone HEAT CORE bolt bumpers for Milsig/Valken M17.
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