Moving the Holosun SCS 320 between pistols
Page last updated . Data compiled September 2026 by the site administrator.
You already own it. Here is what changes from one slide to the next: the plate, the screw thread at each joint, the torque, the tools and any thread trap. 1 kinds of slide, covering 7 pistols, grouped by how the optic mounts and then alphabetically. Nothing is ranked. The Holosun SCS 320 page has its specs and the per-pair answers.
Mounts straight to the slide
SIG P320 optic cut (Romeo1Pro pattern)
Direct Direct mount
7 slides: SIG Sauer P320 X-Carry, SIG Sauer P320 XCompact, SIG Sauer P320 XFive Legion, SIG Sauer P320 XTen, SIG Sauer P320 AXG Legion / AXG Pro, SIG Sauer P320 Spectre Comp, SIG Sauer P320-M17 / M18
- Optic → slide
- per SCS kitSupplied with the optic.
- Optic torque
- per Holosun manual
- Tools
- Torque wrench, Driver bits, Calipers, Degreaser, Witness-mark paint or lacquer
- To mount
- $300–450approximate street prices, September 2026
Steps and safety: installing a red dot, from the makers' manuals. Mounting an optic is gunsmithing; confirm the pistol is unloaded first. Screw length is never listed here because it depends on the whole stack: each pair's build sheet has a calculator that works from your own caliper readings.