Mod made to the newest AT available on Walmart.
+forward stefan dart adaptor (required)
+worker darts (required)
+youtube instructions to delete locks (required)
+5 Kg Spring (strongly recommended)
+Etsy 3D customer prime bar (optional)
If you are using Worker Talons/talon adaptor/worker darts with the front load fed, this kit works like a dream.
The build below will take the AT upto 140 fps and slam fire capable.
The included spring is 9 KG and this makes the catch extremely difficult to engage even with locks removed. Even if it catches, the trigger mechanism now requires for the prime bar to be completely pushed forward to push against the catch. You never want this in an AT because it was meant for close/medium range. I dropped it down to 5 KG and changed out the prime bar with a 3d printed kit found on etsy for consistency in catch and slam fire to work. The original prime bar becomes useless after modification, it's too small for a grown person that can prime this.
If you stick with the 9 KG, I recommend taking one of the smaller black screws and then sticking it into the piece that pushes up against the release for leverage for it to even fire...
Running katanas with the center fed adaptor will cause the darts to rise up and jam in the dart tube 50% of the time. Running non worker darts 15% chance of jam. And I think this should be made clear in description. There's a new 3d printed kit that Jet Blasters has that solves this for all Worker Stefan Kits.