Rearden Alpha Atlas Mount Nitride

The Rearden Alpha Atlas Mount Nitride is a suppressor adapter designed to connect your can to short Rearden muzzle devices or compatible third-party hardware. If you're running a Rugged Obsidian 9 or Obsidian 45—or any suppressor with 1.125-28 (SilencerCo Alpha thread) internal diameter—this adapter bridges the gap between your suppressor and your host gun's muzzle system. It's a straightforward, lightweight interface piece built from 17-4 PH stainless steel and finished in hard-wearing nitride, made to handle repeated attachment cycles without stripping or degrading.

The Alpha Atlas is compact and minimal: it adds only 0.350 inches to your overall length and weighs just 1.22 ounces, so it won't noticeably burden your rifle's balance or handling. Because it's designed for standard Alpha-threaded suppressors with full-size adapters, Rearden doesn't recommend it on low-profile designs like the SilencerCo Omega 9K—check your suppressor's spec sheet before ordering. What it does work with is the full Rearden short-device family (FHD, Mini, SPB, RPB, R2S), plus Q Plan B compatible muzzle devices and the Q Cherry Bomb, giving you flexibility if you're mixing and matching gear.

Whether you're a suppressor enthusiast building a modular rifle arsenal or upgrading an existing upper, the Alpha Atlas is the kind of no-nonsense adapter that gets out of the way and lets your suppressor and muzzle device do their job. The nitride finish resists corrosion and won't wear off at the threads like bare steel, so it'll stay reliable through years of hunts, range trips, and field use.

Key Features

• Lightweight interface for 1.125-28 (SilencerCo Alpha thread) suppressors
• Compatible with Rugged Obsidian 9, Obsidian 45, and other full-size Alpha-threaded cans
• Works with Rearden short muzzle devices (FHD, Mini, SPB, RPB, R2S)
• Also compatible with Q Plan B and Q Cherry Bomb muzzle devices
• Durable 17-4 PH stainless steel with hard nitride finish
• Minimal footprint: only 0.350" added length

Specifications

Frequently Asked Questions

What suppressors work with the Alpha Atlas Mount?

The Alpha Atlas is designed for suppressors with 1.125-28 (SilencerCo Alpha thread) internal diameter, including the Rugged Obsidian 9 and Obsidian 45. It is not recommended for low-profile adapter designs like the SilencerCo Omega 9K. Verify your suppressor's thread pattern before ordering.

What muzzle devices is this compatible with?

The Alpha Atlas works with all Rearden short muzzle devices (FHD, Mini, SPB, RPB, R2S), as well as Q Plan B compatible devices and the Q Cherry Bomb.

How much does this add to rifle length?

The Alpha Atlas adds 0.350 inches to your overall length and weighs only 1.22 ounces, keeping your setup compact and balanced.

What is the nitride finish and why does it matter?

Nitride is a hard surface treatment applied to the 17-4 PH stainless steel. It resists corrosion and thread wear far better than bare steel, ensuring reliable performance through years of attachment cycles and field use.