Docter Footprint

Vortex Viper, Venom & Docter/Noblex Mounts

Quick Check: These mounts fit the Vortex Viper, Burris FastFire, and the Vortex Venom (Open Emitter).
(They do NOT fit the Vortex Venom Closed Emitter, Vortex Defender, or Trijicon RMR).

Choose the trusted, American-made Docter/Noblex mount for your pistol. Our red dot adapter plates provide a rock-solid platform for your optic, creating the essential base for absolute precision and reliability.

We stand behind every part we make with a lifetime of service. An EGW optic plate is the last mount you'll ever need. We manufacture our industry-leading mounts for hundreds of firearm models. Explore our most popular collections below.


Shop Docter / Noblex Mounts by Firearm Brand

Glock

Find the perfect Docter plate for your Glock, ensuring a secure fit and optimal sight picture.

Sig Sauer

Upgrade your Sig Sauer with our precision-machined mounts for Vortex, Burris, and other Docter-spec optics.

Smith & Wesson

Get a rugged, reliable Docter mounting plate for your S&W M&P, Shield, and other popular models.


Don't see your brand? We manufacture plates for dozens of other firearm manufacturers including CZ, Kimber, Ruger, Springfield, and more. Use the "Filter By" options on the left to find the exact mount for your firearm.

Vortex Viper, Venom & Burris FastFire Compatibility Guide
Quick Check: These mounts fit the Vortex Viper, Burris FastFire, and the Vortex Venom (Open Emitter).
(They do NOT fit the Vortex Venom Closed Emitter, Vortex Defender, or Trijicon RMR).

The "Docter" footprint (also known as Noblex) is one of the most common mounting standards for mid-tier red dots. If you own a Vortex Viper or the classic Open-Emitter Venom, this is the correct mount for you.

✅ Confirmed To Fit (Docter Footprint):
  • Vortex: Viper, Venom (Open Emitter ONLY)
  • Burris: FastFire 2, FastFire 3, FastFire 4
  • Docter: II, III, C, QuickSight
  • Noblex: Sight C, Sight II Plus, Sight III, Sight G
  • Primary Arms: SLx RS-10
  • Sightmark: Mini Shot M-Spec, Mini Shot Pro Spec
  • Vector Optics: Frenzy 1x20x28
  • ADE Advanced Optics: RD3-006, RD3-009, RD3-012, RD3-013, RD3-015
  • and More...
❌ Does NOT Fit (Common Mistakes):
The EGW Advantage: 7075 Aluminum & Precision Fit

While a universal optic plate might seem versatile, they often lead to a compromised fit. We believe in building parts that last a lifetime.

Every EGW optic plate is CNC machined from ultra-strong 7075 T6 billet aluminum in our Pennsylvania facility. We choose 7075 aluminum for its superior strength and rigidity—it provides the strength of steel at a fraction of the weight.

This ensures maximum durability under the harshest recoil, guaranteeing your mount remains dimensionally perfect and free from the hidden stresses found in cheaper, cast plates.

  • Precision CNC Machining: Guarantees a perfect fit for both your slide and your red dot sight.
  • Type III Hardcoat Anodizing: Delivers a rugged, non-reflective matte black finish that protects against corrosion and wear.
  • Torque Specs: We recommend tightening the screws to 15 in/lbs and using a small amount of Blue Loctite.
Common Fitment Questions

What is the difference between the Open and Closed Emitter Venom?
They use completely different footprints. The classic Vortex Venom (Open Emitter) uses the Docter footprint and fits this mount. The newer Closed Emitter models (often similar to the Defender series) use the Shield RMSc footprint and will NOT fit.

What is the difference between Vortex Viper and Razor footprints?
They are also different. The Vortex Viper and Venom share the "Docter" footprint. The Vortex Razor uses the larger C-More RTS footprint. They are not interchangeable.

Does this include mounting hardware?
Yes. Each mount includes the necessary high-quality Torx® head screws for a secure installation.