Ever find yourself charging through a jungle of trees during a heated skirmish with less than a handful of BB's left in your M4A1, and seeing a group of enemy soldiers hunched together in the some distant bushes and you know your backup pistol is out of range? Well with an M203 installed, sending a hail of BB's towards your would-be enemies is a snap. Introducing Tokyo Marui's latest rendition of the M203 grenade launcher based on it's original design of the and SPAS-12 shotguns. Offering versatility and functionality over authenticity of the Sun Project version, the TM M203 is perfect for airsofters who skirmish their rifles more than they display them! Finishing and construction is top notch and the M203 feels sturdy enough to take a rough beating. The TM M203 comes in a standard kit that requires user installation, along with one shell, loading tool, and a manual in both English and Japanese. Installation is relatively easy and comes with English instructions with graphical illustrations that make the procedures relatively easy to understand. One point to note is that the installation requires relocation of the battery from the lower foregrip to the upper foregrip. The weight of the M203 adds considerable bias to the front end but made the entire M4A1 seem much more of a big weapon. The fit and finish is top notch and is visually no less impressive than the Sun Project M203. The plastic lower frame is finished in a convincing drab gray that is believably metal. Package include ( Manual, Shell Type Magazine, M4A1 / RIS Adapter, 200 pics 0.25 BBs, Loader, Cleaning Rod ) Model M203 Grenade Launcher for M4A1 Carbine and M4 R.I.S Capacity: 30 (Each pull can shoot 3 rds, that means you can pull ten times) Weight- 2 lbs (980g) Length- 15 inches(390mm) Power Source Spring Blowback None Hop-up Fixed Shooting Mode Pump Action Construction ABS Plastic, Some Metal Manufacturer Tokyo Marui