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.
Springfield Echelon VIS · VIS
Variable Interface System with optic-specific pin and screw sets.
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: DeltaPoint Pro · checked Aug 5, 2026 · footprint source ↗
Direct VIS mount.
Hardware: Pin set 2; optic-manufacturer screws.
Not personally tested · manufacturer verified · checked Jul 15, 2026
Mounting footprint: Trijicon RMR · checked Aug 5, 2026 · footprint source ↗
Direct VIS mount.
Hardware: Pin set 1; optic-manufacturer screws.
Not personally tested · manufacturer verified · checked Jul 15, 2026
Mounting footprint: Trijicon RMR · checked Aug 5, 2026 · footprint source ↗
Direct VIS mount.
Hardware: Pin set 1; optic-manufacturer screws.
Not personally tested · manufacturer verified · checked Jul 15, 2026
Mounting footprint: Holosun K / RMSc family · checked Aug 5, 2026 · footprint source ↗
Direct VIS mount.
Hardware: Pin set 3; optic-manufacturer screws may require modification.
Not personally tested · manufacturer verified · checked Jul 15, 2026
Mounting footprint: DeltaPoint Pro · checked Aug 5, 2026 · footprint source ↗
Direct VIS mount.
Hardware: Pin set 2; screw kit 2A.
Not personally tested · manufacturer verified · checked Jul 15, 2026
Mounting footprint: SIG PRO / DPP family — verify recoil bosses · checked Jul 16, 2026 · footprint source ↗
Direct VIS mount.
Hardware: Pin set 2; optic-manufacturer screws.
Not personally tested · manufacturer verified · checked Jul 15, 2026
Mounting footprint: Shield RMS / RMSc · checked Jul 16, 2026 · footprint source ↗
Direct VIS mount.
Hardware: Pin set 3; OEM screws.
Not personally tested · manufacturer verified · checked Jul 15, 2026
Mounting footprint: Trijicon RMR · checked Aug 5, 2026 · footprint source ↗
Direct VIS mount.
Hardware: Pin set 1; screw kit 1A.
Not personally tested · manufacturer verified · checked Jul 15, 2026
Mounting footprint: Trijicon RMR · checked Aug 5, 2026 · footprint source ↗
Direct VIS mount.
Hardware: Pin set 1; screw kit 1A.
Not personally tested · manufacturer verified · checked Jul 15, 2026
Mounting footprint: Trijicon RMR · checked Aug 5, 2026 · footprint source ↗
Direct VIS mount.
Hardware: Pin set 1; screw kit 1A.
Not personally tested · manufacturer verified · checked Jul 15, 2026
Mounting footprint: DeltaPoint Pro · checked Aug 5, 2026 · footprint source ↗
Direct VIS mount.
Hardware: Pin set 3; optic-manufacturer screws.
Not personally tested · manufacturer verified · checked Jul 15, 2026
These combinations require the exact plate or mounting kit shown with the optic.
Mounting footprint: Aimpoint ACRO · checked Aug 5, 2026 · footprint source ↗
VIS ACRO plate required.
Hardware: Follow VIS ACRO plate instructions.
Not personally tested · manufacturer verified · checked Jul 15, 2026
Manufacturer-listed mounting plate or kit.
Checked Jul 15, 2026 · Not personally tested
Mounting footprint: Aimpoint ACRO · checked Aug 1, 2026 · footprint source ↗
VIS ACRO plate required.
Hardware: Follow VIS ACRO plate instructions.
Not personally tested · manufacturer verified · checked Jul 15, 2026
Manufacturer-listed mounting plate or kit.
Checked Jul 15, 2026 · Not personally tested
Mounting footprint: Aimpoint A-CUT / COA · checked Aug 5, 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: 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 509T · checked Aug 5, 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: 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: SIG P320 / DPP 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: 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: SIG PRO / DPP 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: RMR-pattern / RCR hardware · checked Aug 5, 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
Model revisions, screw length, plate revisions, and supplied hardware can change. Confirm the exact manufacturer instructions before mounting or using equipment.