
Availability: In Stock
The Rugged 3-Lug Adapter 1/2x28 is a precision-machined mounting interface designed for shooters running Rugged Suppressors' Obsidian9 3-Lug suppressor system. If you're building or converting a 9mm AR-15 to run a 3-lug suppressor mount, this adapter threads directly onto your barrel and serves as the foundation for quick-disconnect suppressor attachment. It's made to HK-spec 9mm standards, ensuring reliable engagement with Obsidian9 3-lug suppressors.
What sets this adapter apart is Rugged's built-in Go/No Go Gauge—a patented confirmation system that tells you at a glance whether your suppressor is fully and properly seated. That's the kind of feedback that matters when you're running suppressed: you know the can is locked in tight, no guesswork. The adapter itself is precision-machined from durable materials for long-term reliability in the field or at the range, and it's finished in black to match modern rifle builds.
Installation is straightforward: thread it onto your 1/2x28 barrel using red Loctite and torque to 20–25 ft-lbs for proper retention. Keep in mind this adapter is built for 9mm only and is not compatible with .45 ACP platforms, so verify your caliber before purchase.
| Thread Pitch | 1/2×28 |
| Caliber | 9mm |
| Platform | AR15 |
| Weight | 0.13 lbs |
| Dimensions | 2.75 × 1.50 × 1.50 in |
| Color | Black |
No. This adapter is manufactured to 9mm HK specification and is not compatible with .45 ACP platforms.
The Rugged 3-Lug Adapter is designed to work in conjunction with the Rugged Suppressors Obsidian9 3-Lug Mount.
Rugged Suppressors recommends applying red Loctite and torquing the adapter to 20–25 ft-lbs for secure attachment to your barrel.
The Go/No Go Gauge is a patented feature built into the adapter that provides visual confirmation your suppressor is properly seated and fully attached, eliminating doubt about suppressor engagement.



SKU: 115759639 • Width: 1.5in • Height: 1.4in • Depth: 2.5in • Weight: 0.13oz





Availability: In Stock
The Rugged 3-Lug Adapter 1/2x28 is a precision-machined mounting interface designed for shooters running Rugged Suppressors' Obsidian9 3-Lug suppressor system. If you're building or converting a 9mm AR-15 to run a 3-lug suppressor mount, this adapter threads directly onto your barrel and serves as the foundation for quick-disconnect suppressor attachment. It's made to HK-spec 9mm standards, ensuring reliable engagement with Obsidian9 3-lug suppressors.
What sets this adapter apart is Rugged's built-in Go/No Go Gauge—a patented confirmation system that tells you at a glance whether your suppressor is fully and properly seated. That's the kind of feedback that matters when you're running suppressed: you know the can is locked in tight, no guesswork. The adapter itself is precision-machined from durable materials for long-term reliability in the field or at the range, and it's finished in black to match modern rifle builds.
Installation is straightforward: thread it onto your 1/2x28 barrel using red Loctite and torque to 20–25 ft-lbs for proper retention. Keep in mind this adapter is built for 9mm only and is not compatible with .45 ACP platforms, so verify your caliber before purchase.
| Thread Pitch | 1/2×28 |
| Caliber | 9mm |
| Platform | AR15 |
| Weight | 0.13 lbs |
| Dimensions | 2.75 × 1.50 × 1.50 in |
| Color | Black |
No. This adapter is manufactured to 9mm HK specification and is not compatible with .45 ACP platforms.
The Rugged 3-Lug Adapter is designed to work in conjunction with the Rugged Suppressors Obsidian9 3-Lug Mount.
Rugged Suppressors recommends applying red Loctite and torquing the adapter to 20–25 ft-lbs for secure attachment to your barrel.
The Go/No Go Gauge is a patented feature built into the adapter that provides visual confirmation your suppressor is properly seated and fully attached, eliminating doubt about suppressor engagement.
SKU: 115759639 • Width: 1.5in • Height: 1.4in • Depth: 2.5in • Weight: 0.13oz


