The Details

• Polymer slide
• Textured grip 
• Gold finished barrel, recoil spring plug, trigger, hammer, safety, and grip screws - all of which are upgradable - Click here for upgrades
• Adjustable target rear sight w/ fiber optic front sight
• Ambidextrous safety
• Railed frame for adding accessories
• 5.1 double stack magazine
• FPS: 300-320
• Green Gas
• Semi-Auto
• Adjustable Hopup

Spare Magazines are available here

Or if you're interested in using your TM as a primary Check out the HPA Primary Airsoft M4 Adaptor - 

Specs:

Dimensions: 220mm x 143mm
Magazine: 31rds. Works with Tokyo Marui and other compatible 5.1 Hi-CAPA series Airsoft GBB Pistols
Gas Type: HFC134a, Green gas
Firing Mode: Semi-Auto, Safety
System: Gas Blowback
Hopup: Yes, Adjustable
Package Includes: Gun, Magazine, Manual