Third Echelon Development Glock Gas Cap for Glock Gen 3, 4 & 5*
The Third Echelon Development Gas Cap is a suppressor-focused upgrade designed to reduce the amount of gas and debris directed back into the shooter’s face when running a Glock with a suppressor. Replacing the factory slide plate, it uses a contoured shroud to help divert excess blowback downward and away from the eyes, making suppressed shooting more comfortable without altering the pistol’s core operating system. Built as a direct-fit part for Glock Gen 3, 4, and 5 pistols, it installs quickly with no permanent modification required.
Features
- Designed to help reduce gas and debris to the shooter’s face
- Suppressor-optimized contoured shroud design
- Direct-fit replacement for the factory slide plate
- Two-position sliding assembly
- Can be raised for standard disassembly and lowered for use
- Precision CNC-machined steel construction
- Black nitride finish for corrosion resistance
- Made in the USA
Specifications
- Product Type: Suppressor optimization / blowback-reducing slide cap
- Compatibility: Glock Gen 3, 4, and 5
- Material: CNC machined steel
- Finish: Black nitride
- Weight: 0.3 oz
Compatibility Notes
- *Fits most Glocks marked Gen 3, 4, 5, and more.
- Fits models with 1-in/25.5mm wide slide: G17, G17L, G19, G19X, G22(Gen3-4 only), G23(Gen3-4 only), G27(Gen3-4 only), G25, G26, G28, G30S, G31, G32, G33, G36, G45, G47, G49
- Does NOT fit 10mm or .45 Cal variants or Gen 5 .40 Cal models, which have a wider slide.
- Not compatible with added backstraps, which have a beavertail. (Other backstraps are fine).
- Most Glock “clones” are Gen 3-based; however, compatibility is not guaranteed with aftermarket or “clone” slides.








