

Suppressor Optimized – Features a contoured shroud which hovers over the rear gaps of the frame and slide. Diverting excess gas and debris downward, away from the shooter’s eyes & face.
Precision CNC Machined Steel Construction – 2-piece assembly of CNC machined steel components with a hard, black nitride finish for long-lasting corrosion resistance and a lifetime of hard use.
Two-Position Sliding Assembly – Raises to detent position above frame rails to allow standard disassembly of your pistol, and back down to its deployed position detent when in use.
Installation: Direct-fit replacement for factory slide plate — simple, fast, & no permanent modifications required.
Manufactured in the USA – All components, manufacturing, & assembly is intentionally and proudly done in the USA
Warranty: Limited lifetime warranty
Product Type: Suppressor Optimization – Blowback-Reducing Slide Cap
Compatibility: Glock G43, G43X, G48
Material: CNC Machined Steel
Finish: Black Nitride
Weight: 0.3oz
Will the Gas Cap affect cycling or reliability?
It does not interfere with normal cycling or reliability when installed correctly, and adds a negligible amount of weight. It can be fired indefinitely in its down (functional) position or in its up position (no benefit) without impacting the original operating mechanics of your pistol.
Is the Gas Cap compatible with “Clone” firearms or other aftermarket slides?
The Gas Cap comes in models specifically designed around the different Glock generations OEM slides and fits factory-spec components, but we cannot guarantee fitment with the numerous aftermarket parts & pistols available.
30-Day Performance Guarantee — No Questions Asked
We’re so confident, you can try it for 30 days —
if it doesn’t deliver, you’re covered.
![Gas Cap - Blowback reducing slide cap [SLIMLINE]](https://3edev.net/wp-content/uploads/2025/06/Glock-Gen3-Gen5-00c.jpg)
![Gas Cap - Blowback reducing slide cap [SLIMLINE] - Image 2](https://3edev.net/wp-content/uploads/2025/06/Glock-Gen3-Gen5-01c.jpg)
![Gas Cap - Blowback reducing slide cap [SLIMLINE] - Image 3](https://3edev.net/wp-content/uploads/2025/06/Glock-Gen3-Gen5-02c.jpg)
![Gas Cap - Blowback reducing slide cap [SLIMLINE] - Image 4](https://3edev.net/wp-content/uploads/2025/06/Glock-Gen3-Gen5-03-1.jpg)
![Gas Cap - Blowback reducing slide cap [SLIMLINE] - Image 5](https://3edev.net/wp-content/uploads/2025/06/Glock-Gen3-Gen5-04-1.jpg)
![Gas Cap - Blowback reducing slide cap [SLIMLINE] - Image 6](https://3edev.net/wp-content/uploads/2026/07/gas-cap-compatibility-matrix-1-scaled.png)
![Gas Cap - Blowback reducing slide cap [GEN 3-5 LARGE FRAME]](https://3edev.net/wp-content/uploads/2025/06/Glock-Gen3-Gen5-00c-1024x911.jpg)