Another release from X-Fire/PDI, with new enhancement products for your MAEGs, this time for the Tokyo Marui MP7A1... "Made of Duralmin and all CNC machined. Outer diameter is 15.8mm、For only MP7A1. This muzzle is based on Smith Enterprise VOLTEX series and we arranged it for MP7. Front outer diameter is 13mm, and Rear is 15.8mm. It is smaller. Inner diameter is 8.7mm and it has effect of Barrel Spacer. You can use this muzzle with Muzzle Base and 01 Inner barrel 242mm."