This configuration is an ideal base to create a blaster that can fire foam darts too.
Here is a very easy mod to convert it from firing only foam arrows, to also being able to fire foam darts. In fact, this mod is so simple... it'll only take a few minutes to do. :)
Step 1: Remove the Air Baffles (AB) from the launcher tube tips. Use a pair of needle nose pliers to grip onto the baffle vents, then just twist it to remove.
Step 2: Cut to length your choice of barrel tubes. Use barrel tube material that can fit into the existing launcher tubes. Make sure the barrels have an air-tight seal within the launcher tubes.
In my example, i use 4 x 6" lengths of ½" ID smoked grey PETG tubes that slot perfectly into the launcher tubes.
Pump it up, load the foam darts into the barrels... and fire! :)
Foam arrows can still be used after this mod is done, therefore you could fire both foam arrows and foam darts at the same time too.
Useful for Nerf game scenarios where there are additional special rules for foam arrow/missile hits. :)
:: Sample Test Fire Data ::
PTG: Parallel-To-Ground (Shoulder height, no elevation)
ATG: Angled-To-Ground (Aimed higher, 30 degrees elevation)
Distance is measured at where the dart lands (Average of 4 darts).
Firing foam darts:
PTG = 75 ft
ATG = 90 ft
Note that the test was done indoors with customised foam darts. The results are sample estimates for reference (your results may differ depending on foam darts, materials and mod techniques used).