Matrix Full Metal 40mm M203 Airsoft Grenade Launcher for M4/M16 Series Airsoft Rifles (Model: Mini / Black)

"I bought the mini variant and it didn't work out of the box, the launcher had an issue where the firing pin wasn't long enough to detonate the grenade. However it was a pretty easy fix, all I had to do was remove the safety and it. Build quality is pretty good, doesn't rattle that much and is pretty light.

"I just got this grenade launcher and it fits very well on my m4 no wobbling so far and looks amazing. The one con I have so far is that I have to pull the almost off to fit in my 40 mike shell and it’s a very tight fit to the point where it took some of the sticker off the shell, I’m sure it fits other smaller shells but just disappointed that it doesn’t really fit the one shell I enjoy using.

"Overall build quality is decent but The ribs inside the barrel make it impossible for the taginn shells to fit. If you’re looking at this to use with taginn shells please do not buy.