Blasters3D Modulus Barrel Adapter (PT+) for Surge StarFire XL Gel Blaster - Allows You to Use Foam Dart and Foam Ball Muzzle ModsThis Blasters3D product allows you to attach Nerf Modulus front barrels to your Surge StarFire XL gel blaster. With this adapter, you can use any Modulus mock silencer and mock suppressor in front of the Surge StarFire XL gel blaster. Check out Blasters3D muzzles for Modulus for an even bigger barrel selection. This adapter is compatible with the following blasters: StarFire Gel Blaster StarFire XL Gel Blaster Surge Gel Blaster Surge XL Gel Blaster