Lets extend them for more ammo capacity...
Step 1: Put the ends of 2 ammo belts side-by-side.
Step 2: Remove the screws from each end-block. Remove the covers.
Step 3: Cut a small notch on one of the belts to fit on the other belt's clip.
Step 4: Attach the cover back to the connected belt and install the screws back securely.
Final Step: You now have a 50-dart ammo belt!
You can keep connecting ammo belts until you get your desired ammo capacity, i'm sure some of you are already planning to go for 100-dart ammo belts!
To revert the belts back to stock 25-dart ammo belts, just reverse the process. :)