Hey all, hope this is the right spot to post this. I've had a PSA upper and lower sitting around partially built for about a year, recently I started checking the EE for the remaining parts and found enough good deals to piece a pistol together. The last part remaining was the pistol buffer cheek rest , I really like the Phase 5 buffer tube that I have but wanted something better than the foam pad it comes with. I don't feel like spending $65-100 for a used SIG brace or $50 for an injection molded arm brace without trying them first.
I decided to print a modular cheek rest / arm brace to test. I uploaded the file for the buffer tube and will upload the slide in blade once I've had the chance to improve the design: You can get it here on
GrabCAD
With the current design you can affix a tourniquet with elastic bands, and use a 1" wide velcro strap to affix a 10 or 20 round PMAG. Oh and you can strap your arm to it since it's an assistive device.
Is this in any way as durable as buying an injection molded blade or thordsen cheek rest? Absolutely not.
Should you use this as a shoulder stock? Absolutely not
Is it cheap? Total Cost: $1.75 worth of PLA filament
Figured I would share in case anyone has an AR-pistol with a naked buffer tube.
If you have a non phase-5 pistol buffer and a caliper hanging around feel free to post dimensions so I can adjust the design to fit more pistol buffers.