Summary

A stock extender to blend the lines of the raider stock with the actual raider (or rampage). It has a nice tight fit with my printer, with no wobble at all, and the profile of the part matches up well with the hasbro parts (not perfectly however!). I find this makes the stock length much more comfortable on my hpa raider. I also added holes for m4 threaded brass heat inserts, so you can screw your stock onto the extender for maximum solidity.
You might need to scale it down to 10 percent in your slicer, i had that issue for some reason. Also, print it with the female stock bit facing down and the male adapter upwards

Print Settings

Printer Brand:

Creality

                                            <p class="detail-setting printer"><strong>Printer: </strong>                     <div><p>Ender 3</p></div></p>                                                                                <p class="detail-setting rafts"><strong>Rafts: </strong>                     <div><p>Doesn't Matter</p></div></p>                                                                                <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>No</p></div></p>                                                                                <p class="detail-setting resolution"><strong>Resolution: </strong>                     <div><p>up to you</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>increasing perimeters is better</p></div></p>

Post-Printing

I have modeled a sacrificial layer which you should cut out with a knife, it just means you don't need supports and still get a nice clean underside.

Stock extender for nerf raider

Stock extender for nerf raider

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