GrovTec US Inc GTSW308 1" Push Button Mag Cap for Mossberg 500 12 Gauge Shotgun - Black Oxide Steel
- Firearm Make Fit:
- Mossberg
- Finish-Color:
- Black
- Material:
- Steel
- Loop Size:
- 1"
The GrovTec US Inc GTSW308 1" push button mag cap for Mossberg 500 12 gauge shotguns is a simple, durable upgrade for shotgun owners who want reliable tube magazine security. This black oxide steel cap screws onto your Mossberg 500's magazine tube and features a push-button release mechanism, letting you swap out shells or top off rounds without fumbling with a traditional friction-fit cap. If you run a Mossberg 500 for hunting, sport shooting, or home defense, a quality mag cap is one of those small upgrades that makes daily handling smoother and faster.
Built from black oxide steel, the GTSW308 resists corrosion and blends in with the receiver and barrel of your shotgun. The 1-inch diameter is spec'd for Mossberg 500 platforms, so fit and function are straightforward. Push-button release means you're not wrestling with a stuck cap or damaging the tube trying to unscrew it—just press and drop the cap when you need access. That simplicity is exactly what you want in a working shotgun.
Whether you're loading up for an early morning hunt, running drills at the range, or keeping your Mossberg ready at home, a quality mag cap keeps things quick and keeps grit out of your tube. The GrovTec design does its job without fuss, which is the hallmark of honest shotgun gear.
Key Features
- Push-button release for quick magazine tube access
- Black oxide steel construction for durability and corrosion resistance
- 1" diameter—compatible with Mossberg 500 shotguns
- Simple, field-proven design
Specifications
| Brand | GrovTec US Inc |
| Model | GTSW308 |
| Gauge | 12 Gauge |
| Diameter | 1" |
| Material | Black Oxide Steel |
| Firearm Compatibility | Mossberg 500 |
| Release Type | Push Button |
Frequently Asked Questions
Will this mag cap fit my Mossberg 500?
Yes. The GrovTec GTSW308 is designed specifically for Mossberg 500 12 gauge shotguns and features a 1-inch diameter to match the magazine tube on those models.
How does the push-button release work?
Press the button to release the cap from the magazine tube. This makes it faster to remove than traditional friction-fit caps and reduces wear on your hands and the tube.
What's the material and finish?
The cap is constructed from black oxide steel, which resists corrosion and provides a durable, low-gloss finish that matches most shotgun hardware.

