SA5P Folding Stock Adapter | AR-15 Compatible | Left or Right Folding

American-Made Strength. Compact Design. Built to Last.

Product Description

The SA5P Folding Stock Adapter is engineered for firearm owners who value durability, reliable construction, and a compact storage configuration. Designed and tested with professional applications in mind, this American-made adapter offers a rugged folding mechanism for compatible AR-platform firearms.

Manufactured in the USA from CNC-machined 4140 steel, the SA5P delivers exceptional strength while weighing just 9.4 ounces. Its upgraded construction is rated by the manufacturer as 250% stronger than the previous Gen 4 adapter, providing improved durability for demanding applications.

Available in left-folding and right-folding configurations, the SA5P allows customers to select the orientation that best suits their firearm setup and personal preferences.

The adapter features an improved locking mechanism, adjustable hinge tension, a hardened buffer-retaining pin, and two integrated quick-detach (QD) attachment points.

Its user-serviceable design and standard 1-3/16" x 16 threading provide compatibility with a variety of AR-platform configurations.

Whether you're upgrading an existing build or selecting components for a new project, the SA5P combines durable materials, thoughtful engineering, and American manufacturing in one compact accessory.

Key Features

• Made in the USA: American-designed and manufactured for dependable quality.

• Heavy-Duty 4140 Steel Construction: CNC-machined steel housing engineered for strength and durability.

• 250% Stronger Than Gen 4: Manufacturer-reported improvement in strength over the previous-generation adapter.

• Lightweight Design: Weighs approximately 9.4 ounces.

• Left or Right Folding Options: Available in two configurations to accommodate different preferences.

• Adjustable Hinge Tension: Allows customization of hinge resistance.

• Improved Locking Mechanism: Updated design for secure folding and locking operation.

• Hardened Buffer Pin: Reinforced component designed for improved durability.

• Dual QD Attachment Points: Two integrated quick-detach sling attachment locations.

• Standard Threading: Features 1-3/16" x 16 threading.

• 1045 Steel Bolt Extension Included: Supplied for compatible bolt carrier group configurations.

• User-Serviceable Construction: Designed to support routine inspection and maintenance.

• Installation Tools Included: Includes the manufacturer's required installation tools.

• AR-Platform Compatibility: Designed for mil-spec AR-15 platforms and select other compatible configurations.

Folding Direction Options

The SA5P is available in two folding orientations. Direction is determined while viewing the firearm in its normal forward-facing position.

Right-Folding Version

The adapter folds toward the firearm's ejection-port side on a standard AR-platform configuration.

Left-Folding Version

The adapter folds toward the opposite side of the ejection port on a standard AR-platform configuration.

Previous generations of this adapter primarily featured the left-folding orientation.

Select your preferred folding direction when purchasing: LEFT or RIGHT.

Product Specifications

Compatibility Information

Compatible Platforms

• Mil-spec AR-15 configurations

• Most AR-10 builds, subject to component compatibility

• Select 9mm bolt carrier groups meeting the manufacturer's dimensional requirements

Not Compatible With

• Tippmann .22 platforms

• LWRC platforms identified as incompatible by the manufacturer

• Extar EP9

Compatibility with nonstandard receivers, proprietary components, and pistol-caliber platforms should be confirmed with the manufacturer before purchase.

American-Made Engineering

The SA5P represents an evolution of the manufacturer's folding adapter design, incorporating upgraded materials and improvements to key mechanical components.

Its CNC-machined steel construction, reinforced components, and serviceable design make it a durable option for compatible AR-platform firearms.

With left- and right-folding versions available, customers can select a configuration suited to their individual setup.

Available at TCOB Armory

Rugged Construction. American Manufacturing. Dependable Engineering.

At TCOB Armory, we understand that quality firearm components matter. That's why we offer accessories designed with durability, practical functionality, and reliable construction in mind.

The SA5P Folding Stock Adapter combines American-made 4140 steel construction, an upgraded locking mechanism, adjustable hinge tension, and convenient folding configurations in a rugged, compact design.

Whether you're customizing an existing AR-platform firearm or exploring options for a new build, our team can help you understand product compatibility and available configurations.

Visit TCOB Armory in Spring, Texas, to explore the SA5P Folding Stock Adapter and our selection of firearm components, accessories, and customization services.

TCOB Armory | Quality Gear. Trusted Service. Built for Enthusiasts.

Important Compatibility & Safety Notice: Verify compatibility with your specific firearm, receiver extension, and bolt carrier group before purchasing. Folding stock adapters may affect firearm configuration and applicable legal classifications. Consult the manufacturer's instructions and applicable federal, state, and local laws. Do not operate the firearm with the stock folded unless the manufacturer expressly confirms that the specific configuration supports it. Professional installation and inspection are recommended.