Blasters3D HMP Flash Suppressor (102mm Long) for Foam Dart/Ball Blasters - Muzzle Barrel Mod nightvision combat 9mm outer dimension and a

9mm outer dimension and a 13

You can get the Umarex H&K Licensed USP Full Size CO2 Gas Non-Blowback Airsoft Pistol from Amazon here:

WARNING: This muzzle device is designed for airgun and airsoft guns

44 Magnum Airsoft Spring Pistol

Blasters3D HMP Flash Suppressor (102mm Long) for Foam Dart/Ball Blasters - Muzzle Barrel Mod nightvision combat 9mm outer dimension and aFoam dart toy blaster barrel tip, flash hider, flash suppressor, mock silencer, muzzle brake, muzzle device, and barrel extender. Excellent for hiding a longer brass inner barrel. Blasters3D barrels use standard Modulus foam dart ball quick detachment interface. Blasters3D have Modulus barrel adapters for many blasters: Airgun Airsoft adapters: AirPower3D Modulus Barrel Adapter Mark I for Airsoft AirPower3D Modulus Barrel Adapter Mark II for Airsoft