Third Echelon Development Gas Cap - Glock

The Third Echelon Development Gas Cap – Glock is a replacement slide plate designed for select Glock pistol generations, including Gen 3, Gen 4, Gen 5, Slimline models, and Gen 6/V Series variants. Intended for suppressed shooting applications, the integrated contoured shroud extends over the rear frame-to-slide gap to help redirect gas and particulate matter downward during operation. This component installs in place of the factory slide cover plate with no permanent modifications required.

Manufactured from precision CNC machined steel, the Gas Cap features a two-piece assembly with a black nitride finish for corrosion resistance and surface durability. Its two-position sliding design allows the unit to move to a raised detent position for standard slide disassembly and return to a deployed position during use. All components are produced and assembled in the USA.

Compatibility

This variant fits most Glocks marked Gen 3, 4, 5, and more. See details to confirm fitment.

• Fits G17, G17L, G19, G19X, G25, G26, G28, G30S, G31, G32, G33, G36, G45, G47, G49 (All models with 1-in/25.5mm wide slide)
• Does NOT fit most .40, 10mm, or 45Cal variants 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 3EDEV cannot guarantee compatibility with aftermarket or "clone" slides.

Specifications

• Compatibility: Glock Gen 3, Gen 4, Gen 5, Slimline, and Gen 6/V Series (verify specific model fitment)
• Function: Replacement slide plate with integrated gas-deflecting shroud
• Material: CNC machined steel
• Finish: Black nitride
• Design: Two-piece assembly
• Operation: Two-position sliding detent for disassembly and deployed use
• Installation: Direct-fit replacement; no permanent modification required
• Weight: 0.3 oz.
• Manufactured In: USA