AR Pistol cheek rest?

[Omegafatty]

Hello, I'm new to AR pistols, I've currently purchased a Juggernaut tactical AR pistol and I'm thinking about installing a thordsen cheek rest, however I'm not sure which one would fit this particular style buffer tube. I only want the tube cover with the saddle

https://jtactical.com/products/ar-15-ca-pistol

https://www.thordsencustoms.com/ar-pistol/cheek-rest-kits.html