MM S400 Buttpad Extension

Most complaints about the ZWQ S400 come down to the same thing: the stock buttstock length feels short once you're actually shouldering and priming the blaster, especially if you're on the taller side. The MM S400 Buttpad Extension addresses that directly by adding length to the rear of the blaster without asking you to give up the factory rubber buttpad — it stays in place, just further back.

Because the extension moves the buttpad further from the receiver, it ships with a longer screw than stock to keep everything mounted securely rather than relying on the original short screw across a bigger gap. The result is noticeably better comfort for taller and larger players when priming the blaster repeatedly through a game. Available in Orange, White, and Black.