PLEASE NOTE: THIS IS THE ADAPTER ONLY. NO STOCK, BRACE, OR HINGE IS INCLUDED.

Want to run an AR-style stock, brace, or side folder on your Solus chassis? So did we. The factory stock interface is solid, but the options stop there — until now. This adapter opens up the entire world of 1913 Picatinny-compatible stocks, braces, and folding hinges for your Solus build without cutting or permanently modifying anything. Uses your factory hardware. Drop it in, torque it down, done.

Kit Contents:

• Solus chassis Picatinny stock adapter (qty, 1)

Key Specifications:

• Fits Solus Competition Chassis*
• Precision-machined from 7075 aluminum
• Type III hard anodized finish
• Accepts any 1913 Picatinny-compatible stock, brace, or folding hinge
• Installs using factory hardware — no additional fasteners required

*Compatible with Solus-pattern Competition chassis, including certain Aero Precision Solus models. Not affiliated with Aero Precision.

Installation:

1. Remove factory stock spacer using a 3/16 allen key
2. Install Picatinny stock adapter using factory hardware, torque to 60 ± 5 in-lb
3. Install your 1913-compatible stock, brace, or hinge per the manufacturer’s instructions
4. Enjoy your new setup

Usage Note:
Compatibility with folding hinges and braces will depend on the specific stock or hinge used. Aftermarket weights or oversized buttstocks may affect clearance. If you have questions about compatibility, reach out before ordering.

NOTE: Adapter may have oil on surface from machining — wipe clean before installation.

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FAQs

Will this fit the Aero Precision Solus?
Yes. It’s designed for the Solus Competition Chassis platform, including Aero Precision Solus models.

Does this come with a stock or brace?
No — this is the adapter only. It accepts any 1913 Picatinny-compatible stock, brace, or folding hinge of your choice.

Does it use my existing hardware?
Yes. This adapter is designed to use the factory hardware from your Solus chassis — no additional fasteners needed.

What tools do I need?
Torque wrench and a 3/16 allen key.

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Warranty & Returns

Limited Warranty – Solus Chassis Picatinny Stock Adapter

We stand behind the quality and craftsmanship of the Solus Chassis Picatinny Stock Adapter and are proud to offer the following warranty:

Coverage
We warrant this product against defects in materials and workmanship for a period of 1 year from the date of purchase. If a defect is found, we will repair or replace the product at our discretion, free of charge.

Not Covered
Damage caused by improper use, abuse, or modification. Damage to chassis, stocks, or other equipment used in conjunction with this adapter. Normal wear and tear from standard use.

How to Make a Claim
Contact us at info@rokinprecision.com with proof of purchase, a description of the issue, and photos of the defect if applicable. We will provide return instructions and determine whether repair or replacement is appropriate.

Limitation of Liability
In no event shall Rokin Precision be liable for any incidental or consequential damages, including but not limited to damage to persons, firearms, chassis, or other property, arising from the use or misuse of this product.