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ALL NFA RULES APPLY All versions of the Flux Raider X and MP17 stocks come with the compatible gas cap for their chassis included. If you already have a gas cap here is the compatibility breakdown: The default iron sight window rear cap that come with your Raider ARE NOT compatible with the MEDIUM and LARGE stocks which is why we include the correct gas caps with the purchase of these stocks. The brace gas caps ARE compatible with the FLUSH stock. Installation video found here: If you are having trouble installing your stock, reach out to support@fluxdefense.com
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We currently ship within the US, with more countries coming soon.
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🇺🇸 Ship from USA · On Agora since 2026
$58.99