Excalibur Rhino nock vs Flat nock: specs compared
Updated 05 September 2026.
4
specs differ
Excalibur Rhino nock and Flat nock differ on 4 specs: nock, form, fits, compatibility rule.
| Spec | Excalibur Rhino nock | Flat nock |
|---|---|---|
| Nock | Rhino nock (Excalibur half-moon) | flat (flat-back) nock |
| Form | half-moon style nock fitted to Excalibur Quill arrows, indexed to the string | plain flat disc on the shaft base, non-indexed |
| Fits | Excalibur Micro-series and TwinStrike crossbows shipped with Quill arrows | Excalibur Micro series and older recurve crossbows |
| Compatibility rule | Excalibur ships Quill 16.5-inch arrows with a Rhino nock on the TwinStrike and Micro series. It is indexed like a half-moon nock and must be seated square to the string. | The flight groove and rail must align the string to the centre of the flat base. Excalibur supplies flat-nocked arrows for the Micro series; it does not require proprietary arrows but cautions against anything under 350 total grains. |
Questions and answers
How do Excalibur Rhino nock and Flat nock compare?
Excalibur Rhino nock and Flat nock differ on 4 specs: nock, form, fits, compatibility rule.