X-Shot Longshot Internal QD Sling Mount

Using the Hyperion 2A aluminum heat-set insert QD sling mount, and several sizes of metric drill bits, you can add an extremely strong sling mount to your longshot, capable of withstanding the harshest play.

You will need:

Hyperion 2A QD Sling Heat-set Inserts: https://hyperion2a.com/product/heat-set-quick-disconnect-inserts/

2X M5 x 12-16mm button heads and nuts. The length is a bit flexible as there is room.

Instructions: Print in the presented orientation, supports are unnecessary. 

While you wait, disassemble you're blaster and prepare the side you will use. I chose the left side of the blaster as I could utilize the empty hole from packaging and thus designed the part that way. Clip the plastic as shown and for the straight section on the left, ensure the cut is at as right an angle as possible to allow enough room.

Once the part is printed, drill out the screw holes with an 5mm bit, and install the nuts you will use. Then use your soldering iron to slowly and with almost no pressure, insert the heat-set. Leave about 1.5mm of the heat-set insert exposed above the 3dprinted part to allow for clearance of the blaster shell. You may need to press the sides of the part against a flat surface following this as it will have bowed with the heat.

Now to prepare the blaster shell, use a piece of wood as a sacrificial backing while drilling, to avoid the sort of rip and tear situation I dealt with. Mount the part roughly inside the blaster, screwing one bolt into the now empty hole from packaging and tighten enough to keep in place. Then use a 5mm bit to drill a second bolt hole and then secure with the second button head bolt. 

The next part is going to feel sketchy but the heat-set insert can handle it. Use a 9.5mm bit to drill through the heat-set insert from the outside of the blaster. I flip the QD mount around for this. You only need to drill enough to mark a centering hole. Then remove the sling mount from the blaster shell entirely.  The next part is where I messed up and did a little rip and tear on the blaster shell so don't be like me and do use a piece of sacrificial wood to back where you need to drill and then slowly make your way up in drill bit size until you finish with a 13mm bit. 

Then install the mount on the inside of the blaster shell, as shown. You should see the heat-set insert at the blaster shell level or slightly above it. Do a test fit before you reassemble the blaster and have fun!