Matrix 40mm M203 Grenade Launcher for M4 M16 Series Airsoft Rifles (Model: Long Type / Desert / Matrix Multi-Purpose Package)

"Looks amazing, comes with a few different adapters for different mounting styles which is cool, but... it has a short firing pin that doesn't quite push the release button on my grenade and it doesn't fire at all. I figured if I got the same brand grenade as the launcher it would work, but nope, total dud sadly. I'll be looking into ways to mod it,I guess. I'm sure if I returned it, they would say nothing is wrong with it so I'll just figure it out with some help from YouTube

"These things are prone to the firing pin, not having enough travel to fire the grenade. Mine was like that apparently it’s a common problem. You have to disassemble the trigger and do some work on it to get it to travel more. See YouTube if yours doesn’t fire.