English 
TR4 M4 CQB-H It is part of G&G’s Top Tech line, meaning that it features a high quality full metal body, and their famous pneumatic blowback system.
On top of that, the TR4 features a SOPMOD-style stock, that provides incredible stability when the gun is shouldered, and also helps set the CQB-H apart from the rest of the M4 variants on the field.
