MDT Folding Stock Adapter Carbine to Carbine – 2-Way Locking
The MDT Folding Stock Adapter Carbine to Carbine – 2-Way Locking provides additional flexibility for compatible bolt-action chassis rifles with an AR-style interface. Designed to improve storage, transport and buttstock compatibility, this folding adapter allows a compatible carbine-style stock to fold while maintaining a secure connection between the chassis and buttstock.
The 2-way locking configuration provides secure locking in both the extended and folded positions. When deployed, the adapter maintains solid straight-line integrity for shooting. When folded, the additional locking function keeps the buttstock securely in the folded position for convenient storage and transportation.
The adapter adds approximately 1.75 inches to the length of pull, which should be considered when configuring your rifle.
Key Features
- Carbine-to-carbine folding stock adapter
- 2-way locking configuration
- Designed for compatible bolt-action chassis rifles
- Compatible with AR-style interfaces
- Locks securely in the shooting position
- Locks the buttstock securely in the folded position
- Provides greater flexibility for storage and transport
- Allows additional buttstock configuration options
- Adds approximately 1.75″ to length of pull
- Solid chassis-to-stock interface
- Available in multiple chassis and buttstock interface combinations
2-Way Locking System
MDT folding stock adapters are available in 1-way and 2-way locking configurations.
The 1-way locking system maintains solid, straight-line integrity when the rifle is in the shooting position. The 2-way locking system, featured on this model, adds the ability to securely lock the stock in the folded position.
This provides additional convenience when transporting or storing a rifle with a compatible folding stock configuration.
Carbine-to-Carbine Configuration
This model is specifically designed for a Carbine to Carbine interface combination. The correct adapter configuration is determined by the interface on your chassis and the interface required by your buttstock.
MDT offers folding stock adapters for several combinations:
- Fixed to Fixed
- Carbine to Carbine
- Fixed to Carbine
- Carbine to Fixed
These options allow compatible chassis and buttstock interfaces to be combined in different configurations.
Fixed vs Carbine Interfaces
MDT uses the terms Fixed and Carbine to describe the interface between the chassis system and buttstock.
A Fixed interface is identifiable by its tear-drop-shaped stock interface, while a Carbine interface is characterized by its circular-shaped stock interface.
When selecting a folding stock adapter, the shape of the chassis interface and the interface type of the buttstock are the primary factors to consider.
Compatibility
The MDT Folding Stock Adapter Carbine to Carbine is designed for compatible chassis systems and buttstocks using the appropriate carbine-style interfaces.
The adapter features a solid interface and does not allow a bolt to pass through. Check your rifle configuration carefully to confirm compatibility before installation.
Not Compatible With
- MDT TAC21 chassis
- MDT ESS chassis
- MDT ACC chassis
The MDT ESS and ACC chassis systems have their own folding buttstock solutions.
Product Specifications
| Specification | Details |
|---|---|
| Product Type | Folding Stock Adapter |
| Configuration | Carbine to Carbine |
| Locking System | 2-Way Locking |
| Chassis Interface | Carbine |
| Buttstock Interface | Carbine |
| Application | Compatible bolt-action chassis rifles |
| Interface Style | AR-style |
| Folding Function | Yes |
| Folded Position Lock | Yes |
| Shooting Position Lock | Yes |
| Added Length of Pull | Approximately 1.75″ |
| Interface Type | Solid Interface |
| TAC21 Compatible | No |
| ESS Compatible | No |
| ACC Compatible | No |
Flexible Rifle Configuration
The MDT Folding Stock Adapter Carbine to Carbine – 2-Way Locking provides a practical way to add folding functionality to a compatible rifle while retaining a secure carbine-to-carbine interface. The 2-way locking system adds the convenience of securing the buttstock in both the shooting and folded positions.
Before ordering, verify that your chassis and buttstock both use the required carbine-style interface and that your specific rifle configuration is compatible.

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