The Rugged 3 Lug Adapter 1/2x36 is a precision-machined steel muzzle device designed to securely mount your suppressor to AR15 platforms using the H&K-pattern 3-lug system. If you're running a suppressed rifle and want the confidence that comes with a rock-solid, repeatable mount, this adapter gives you a dedicated interface that locks down hard and stays locked. Rugged builds these adapters to exacting tolerances, and the inclusion of their patented Go/No Go gauge means you can verify proper suppressor attachment before you shoot—no guessing, no surprises.

The 3 Lug Adapter works in tandem with Rugged's 3 Lug Mount or any compatible H&K-patterned 3-lug mount. Installation is straightforward: thread it onto your barrel, torque it to spec with Red Loctite, and you're done. The black finish resists corrosion, and the weight is negligible—less than two ounces—so there's no point-of-aim shift or balance issues to worry about. Whether you're building a precision rifle, a duty gun, or a hunting platform, a dedicated 3-lug adapter is the professional way to integrate suppressor and barrel.

Rugged Suppressor has earned a solid reputation for manufacturing quality, and this adapter is no exception. It's the kind of component that works in the background but makes a real difference in reliability and ease of use. If you're already invested in 3-lug suppressor hardware or planning to be, this adapter is a no-brainer addition to your armory.

Key Features

• Precision-machined steel construction for repeatable, secure mounting
• Patented Go/No Go gauge to verify proper suppressor attachment
• Compatible with Rugged 3 Lug Mount and H&K-pattern 3-lug mounts
• Lightweight design (0.13 lbs) with minimal impact on rifle balance
• Black finish for durability and corrosion resistance

Specifications

Brand	Rugged Suppressors
Platform	AR15
Thread Pitch	1/2×36
Dimensions	2.50 × 1.50 × 1.50 in
Weight	0.13 lbs
Color	Black

Frequently Asked Questions

Is the Rugged 3 Lug Adapter compatible with my H&K 3-lug suppressor mount?

Yes. The adapter is compatible with Rugged's own 3 Lug Mount and any H&K-patterned 3-lug mount. Confirm your mount follows the H&K pattern before purchase.

What torque spec and locking compound should I use?

Rugged recommends using Red Loctite and torquing the adapter to 20–25 ft-lbs when installing it onto your barrel.

What does the Go/No Go gauge do?

The patented Go/No Go gauge provides a quick way to verify that your suppressor is properly and fully attached to the adapter before firing. It gives you confirmation of correct seating.

Will this work on AR15 platforms?

Yes, this adapter is designed for AR15 platforms with 1/2×36 barrel threads.