Rearden Manufacturing Group Llc Mini Muzzle Brake 0.475 14X1 Lh Thrd Facemount Shoulder Blk
The Rearden Mini Muzzle Brake is a precision shoulder-mounted muzzle device built for shooters running suppressor-compatible AR platforms and precision rifles. Chambered in .475 with 14×1 left-hand threads and a face-mount shoulder design, this brake is engineered to anchor your suppressor system with repeatable, rock-solid alignment—critical when you're chasing accuracy downrange or managing recoil in rapid fire. Built from 17-4 PH stainless steel in the H900 condition, it's hard-anodized to 67 HRC surface hardness and finished in black nitride for corrosion resistance in field conditions.
This muzzle brake delivers genuine compatibility with Rearden's Atlas and Atlas XL suppressor platforms, plus Plan B adapters, giving you flexibility in your sound suppression setup. The face-mount shoulder eliminates concerns about alignment drift—once torqued down properly, it stays put. The Atlas XL configuration ships with zero adapter overrun, meaning a cleaner, more compact footprint. If you're already running a Rearden suppressor or considering one, this brake ensures your system is optimized for accuracy and durability.
Installation is straightforward: clean all contact surfaces, torque the muzzle device to 15–25 ft-lbs, ensure the shoulder seats square against the barrel, and use an alignment rod to verify the whole stack. Once mounted, you're looking at a platform that won't shift or rattle. Shims are not included, but the shoulder-mount design minimizes the need for them on properly machined barrels.
Key Features
- 17-4 PH H900 stainless steel construction for strength and longevity
- Face-mount shoulder design ensures repeatable, zero-shift alignment
- Compatible with Rearden Atlas, Atlas XL, and Plan B adapter systems
- Black nitride finish (67 HRC hardness) resists corrosion and wear
- 0.475" bore with 14×1 left-hand threads for secure mounting
- Atlas XL configuration includes no adapter overrun for compact profile
Specifications
| Thread Size | 14×1 (Left-Hand) |
| Bore Diameter | 0.475\" |
| Mount Type | Face-Mount Shoulder |
| Material | 17-4 PH H900 Stainless Steel |
| Finish | Black Nitride (67 HRC Surface Hardness) |
| Compatible Platforms | Atlas, Atlas XL, Plan B |
| Recommended Torque (Muzzle Device) | 15–25 ft-lbs |
| Shims Included | No |
Frequently Asked Questions
Is this muzzle brake compatible with Rearden suppressors?
Yes. The Rearden Mini Muzzle Brake is designed to work with Rearden Atlas and Atlas XL suppressors, as well as Plan B adapters. Always ensure threads and tapers are clean and torque the suppressor to 10 ft-lbs once mounted.
What does \"face-mount shoulder\" mean, and why does it matter?
The face-mount shoulder locates the brake against the barrel shoulder itself, not just thread tension alone. This gives you repeatable alignment and eliminates the risk of the brake shifting under recoil or during installation—critical for accuracy and suppressor concentricity.
What torque specs should I use during installation?
Torque the muzzle brake to the barrel at 15–25 ft-lbs and ensure the shoulder seats square. Once your suppressor is attached, torque it to 10 ft-lbs. Always use an alignment rod to verify the system is square and centered before firing.
Do I need shims with this brake?
Shims are not included. The shoulder-mount design is intended to locate directly against your barrel shoulder, minimizing the need for shimming on properly machined barrels.

