Star Mega Hotshock 10KG Spring

The Star Mega Hotshock 10KG Spring is an upgrade spring for the Nerf Mega Hotshock, rated at 10KG — a step up in weight designed to push more velocity out of the Hotshock's plunger stroke than whatever spring shipped in the box. Like the rest of the Star spring line, it's a drop-in part rather than something requiring a shell modification, so the install stays within the realm of a normal internals swap.

Because the Hotshock is a springer, spring weight is one of the most direct ways to change how it performs — swap this in and you're changing output without touching the barrel or plunger head. It's sold on its own rather than as part of a bundle, so it's a good pickup if you already know your way around a Hotshock teardown and just want a heavier spring on hand, or if you're slowly working through a full internals upgrade one part at a time.