Choose the exact factory optic-ready pistol. Known Ground separates direct fits from plate-required combinations and leaves uncertain fitment honestly unverified.
MOS, A-CUT, Gen6, DPO, and HOST are separate systems. Choose what is marked on or supplied with your pistol.
SIG P320 M17 / M18 Optic Cut · commercial M17/M18
Exact slide revision and screw requirements must be confirmed.
System checked Jul 15, 2026Manufacturer source ↗Filter by manufacturer to see every cataloged optic, including combinations that still need verification.
No separate adapter plate is required. Always confirm the specified screws and torque.
Mounting footprint: SIG P320 / DPP family · checked Jul 16, 2026 · footprint source ↗
Holosun documents the SCS-320 for the P320/DPP interface.
Hardware: Confirm the exact P320/M17/M18 slide revision before installation.
Not personally tested · manufacturer verified · checked Jul 16, 2026
Mounting footprint: SIG PRO / DPP family · checked Jul 16, 2026 · footprint source ↗
SIG documents direct mounting on the commercial M18.
Hardware: Follow SIG screw and torque instructions for the exact slide revision.
Not personally tested · manufacturer verified · checked Jul 15, 2026
These combinations require the exact plate or mounting kit shown with the optic.
No plate-required combinations have been verified for this system.
Mounting footprint: Aimpoint ACRO · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Aimpoint A-CUT / COA · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: DeltaPoint Pro · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Trijicon RMR · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Trijicon RMR · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Trijicon RMR · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Holosun K · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Trijicon RMR · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Trijicon RMR · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Trijicon RMR · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Trijicon RMR · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Holosun K · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Trijicon RMR · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Holosun 509T · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Holosun 509T · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: AEMS-MICRO proprietary · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Holosun 509T · checked Jul 23, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Holosun K / RMSc family · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Shield RMSc · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Shield RMSc · checked Jul 23, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Holosun K · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Holosun K / RMSc adapter · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Glock MOS direct · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: S&W M&P M2.0 direct · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Walther PDP 2.0 direct · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: HK VP9 OR direct · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: DeltaPoint Pro · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: DeltaPoint Pro · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: DeltaPoint Pro · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: SIG PRO / DPP family — verify recoil bosses · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Shield RMS / RMSc · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Aimpoint ACRO · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: RMR-pattern / RCR hardware · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Trijicon RMR · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Trijicon RMR · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Trijicon RMR · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Shield RMSc · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: Shield RMSc · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: DeltaPoint Pro · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: DeltaPoint Pro · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Mounting footprint: DeltaPoint Pro · checked Jul 16, 2026 · footprint source ↗
No verified fitment evidence is on file for this combination.
Not personally tested · unverified · checked Not yet verified
Model revisions, screw length, plate revisions, and supplied hardware can change. Confirm the exact manufacturer instructions before mounting or using equipment.