My little brother's nerf gun stopped automatically rotating the barrel when he cocked it, and now I'm trying to figure out what's up with it. The little silver piece was rattling around :
Nerf N-Strike Elite AccuStrike Series FALCONFIRE Dart Pistol Toy Gun - Working | eBay
Nerf Pro Gelfire Mythic – Hasbro Pulse
Blasterkit 4.5KG/7KG/9KG/12KG Upgrade Spring Coil for Nerf - Etsy