Solus Side-Folding Stock Adapter — Aero Precision Solus Chassis

Batch one shipping now, Next batch in stock Nov 27th, 2025

Experience the long-awaited innovation designed specifically for Aero Precision’s precision rifle platform — the Solus Side-Folding Stock Adapter. This adapter brings next-level portability and user control to your rifle setup, giving shooters the ability to fold their stock to either side without sacrificing fit, durability, or performance. Whether you’re a precision shooter, hunter, or tactical operator, this Solus folding stock adapter is the cleanest and most reliable solution for transporting your rifle safely and efficiently.

Compact Folding, Full Functionality

Built for the Aero Precision Solus Chassis, this Solus Side-Folding Stock Adapter allows your stock to fold to the left or right, offering true ambidextrous flexibility. With this adapter, your rifle can fit into a standard case even with a suppressor or long muzzle device installed — no more removing parts to pack up your rifle. Despite its folding mechanism, there’s no noticeable increase in length of pull compared to the factory stock spacer, ensuring your rifle’s ergonomics remain consistent and comfortable.

Precision Engineering and Premium Materials

Every element of this Solus Aero Precision folding adapter was designed for professional use. The body is fully machined from billet 6061 aluminum, providing an ideal balance of strength and weight. The latch — the key moving component — is cut from 7075 aluminum, chosen for its higher tensile strength and impact resistance. This combination ensures rugged reliability while maintaining a lightweight, balanced design that complements the Solus chassis system.

All components are finished with Mil-Spec Type III hardcoat anodizing for outstanding resistance to wear, corrosion, and abrasion. The anodized finish not only preserves the adapter’s clean aesthetic but ensures dependable performance even under harsh field conditions.

Smart Durability and Serviceability

Inside the folding mechanism, brass bushings act as wear-resistant inserts that prevent the hinge and main components from galling or deforming under repeated use. These bushings are replaceable, allowing for long-term service life even under heavy operational cycles. Over time, the bushings can be swapped out quickly — extending the life of the adapter without the need for costly part replacements.

The 7075 aluminum latch has been deliberately engineered as a predictable, safe failure point. In the event of an extreme impact, the latch will absorb the damage before it reaches your rifle’s chassis or receiver, ensuring the firearm remains unharmed. Replacement latches are available directly through us, ensuring your Solus folding stock system stays field-ready.

Tunable Folding Friction

The adapter’s folding friction is fully user-adjustable using two hinge-pin screws that control tension. By using a calibrated torque driver, shooters can fine-tune the folding resistance to match their preference. The adjustment range starts at 15 in/lbs and goes up to 25 in/lbs. Whether you prefer a tighter lockup for rugged field use or a lighter tension for quick deployment, the friction can be tuned easily without specialized tools.

Seamless Fit & Compatibility

This Solus Side-Folding Stock Adapter replaces the factory stock spacer on Aero Precision Solus Chassis systems with zero modification required. It maintains the factory geometry, keeping your length of pull consistent and familiar. Installation is simple and straightforward, ideal for users looking to upgrade their chassis without custom fitting or gunsmithing.

Compatible exclusively with Aero Precision Solus Chassis rifles, this adapter is designed to integrate perfectly while maintaining the rifle’s structural integrity and precision alignment.

Performance and Practicality

From competition use to field deployment, this Solus Folding Adapter represents a perfect blend of engineering and real-world usability. Every component was machined in the USA with the same attention to detail expected from high-end precision rifle components. Lightweight, reliable, and serviceable — it’s the side-folding solution Solus users have been waiting for.

Notes & Care:
Use a torque driver to set hinge friction. Do not exceed 25 in/lbs of torque.

Disclaimer: This product is not an FFL item and can ship directly to the customer.

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