MM Firefly Magazine Tube Spring

The magazine tube spring is what keeps constant forward pressure on the shells (and the magazine follower) inside the Firefly's magazine tube, feeding the next shell into position every time one is chambered. Over time, or if it's ever removed during a strip-down, it's easy to damage the coils or lose it entirely, and a weak or missing spring shows up immediately as feeding issues on the pump stroke.

The MM Firefly Magazine Tube Spring is the stock replacement, matched to the original Firefly magazine tube length and tension so it drops back in and feeds exactly as it did from the factory. It pairs with the magazine follower already inside the tube, so simply swap the old spring for this one and reload as normal.