JACKAL

It’s kinda like a spamf. No magazine required.

-4 inch plunger tube

-123 O rings

-m3 hardware 

-talon mag spring

-16mm OD 13 mm ID aluminum barrel 

-small O ring for pusher.

-2.5 mm pins for trigger and catch, m3 screws will work.

-4x square nuts for the rear tube section.

The plunger head has a spot on it for a rubber washer the ones I use are red I guess they are more of a gasket but they have a 25mm OD and are 3mm thick. And the center hole is 8mm. I super glue these into place. I will provide a picture of them inside the plunger head. 

As for the main spring I’ve found that 4.5 inches of 1.6-1.8 wire diameter spring with an outer diameter of 18 or bigger works well and has a fairly easy prime. The blaster doesn’t use rods or rails to tension everything together so I would be hesitant to use beefy springs. These springs can be found on aliexpress for very little money. Out of darts also sells similar springs.

Feed back is appreciated.

I’d love to see modifications and remixes.

Build guide coming soon. But it’s not complicated if you need help please reach out.

Half length mega version coming soon ** :)

It will spit out darts it doesn’t like. And I enjoy that.

**UPDATES**

6/9/26 - I’ve updated the slide and plunger head to allow more dart clearance to help with feeding issues I was having. Hope this helps. 

6/10/26 - I’ve added a new pusher labeled streamline pusher. This doesn’t have the rail that slots in with the magazine section and could potentially help with feeding as it won’t snag the second inline dart. I have not tested this yet but I will be testing it out and I will share my experience.

^^can confirm the streamline pusher seems to help with feeding issues. ill be taking down the original pusher.

6/11/26 - I’ve added a simple Pcar that’s mostly cosmetic but will increase accuracy slightly. 

6/15/26 - I’ve added a magazine extender. Unfortunately you will need a longer mag spring for it. 

6/22/26 - I’ve updated the rear tube section to use square nuts that slot into place. And made it so the plunger tube has less room to slide around.