Killer Instinct No. 3 Retention Spring – Compatible with BC 370, Lethal 405, Burner 415, and other models

A dedicated replacement part for several Killer Instinct crossbows, this retention spring keeps the arrow securely seated against the rail throughout the cocking and aiming process. Reliable arrow retention is essential to maintain consistent flight paths and prevent dry-fire or loading issues upon release.

The Killer Instinct Number 3 arrow retention spring is designed to fit a specific selection of crossbow models in the lineup. It fits the BC 370 Crossbow Kit, Black KI380X, Lethal 405, Boss 405, and Burner 415. Before ordering, please check that your model is listed to ensure a perfect fit and reliable operation.

• Compatibility: BC 370 Crossbow Kit, Black KI380X, Lethal 405, Boss 405, Burner 415