A year ago, the Tokyo Marui M4 CQB-R Block 1 was released, the second gas blowback rifle released by the company after the M4A1 MWS. This uses the MWS with the ZET System which was designed to make the gas blowback rifle last longer and more durable. This rifle is based on the CQB-R designed by the US Naval Surface Warfare Center and is a replacement upper receiver for the M4A1 Carbine. Hyperdouraku takes a look at this rifle a year after it was released.

Read the full review here and below is the video overview: