MP7 (T. MARUI) GBB Airsoft Suppressor is made of aluminum and come with a long 6.03mm copper barrel.
This airsoft suppressor is specially constructed to use a 370mm long inner barrel. Thereby, it:
1) increase shooting power about 20%;
2) reduce shooting noise about 10%;
3) Improve shooting accuracy;
4) one long barrels system. If the Suppressor is removed from the MP7, the long inner barrel can be seen.
This airsoft suppressor set includes:
1) MP7 airsoft suppressor,
2) a 370mm length 6.03mm inner barrel,
3) a steel flash-hider,
4) a steel outer barrel adaptor, and
5) an enhanced hop-up recoil spring.
Installation procedure of this airsoft suppressor is similar to the procedure of installing a real MP7 suppressor, and no tool is required for installation.