MDT 1-Way Locking Folding Stock Adapter Carbine to Carbine Black. The MDT universal adapters are compatible with most bolt-action chassis rifles that have an AR-style interface. Available in 1-way or a 2-way locking configuration. The 1-way lock maintains solid straight-line integrity when shooting while the 2-way lock provides the additional function of holding the stock securely in the folded position. Get more adaptability for storage transport and buttstock choice. The MDT universal adapters are compatible with most bolt-action chassis rifles that have an AR-style interface. Available in 1-way or a 2-way locking configuration. The 1-way lock maintains solid straight-line integrity when shooting while the 2-way lock provides the additional function of holding the stock securely in the folded position. Specifications for MDT 1-Way Folding Stock Adapter: Manufacturer: MDT Condition: New Color: Black Fit: AR-Style Buffer Tube Interface Country of Origin: Canada Features of MDT 1-Way Folding Stock Adapter Carbine / Fixed Interfaces: MDT has been using the terms Fixed and Carbine to describe the interface between the chassis system and the buttstock. Our Fixed chassis systems are recognizable by their tear drop shaped stock interface while our Carbine chassis systems are characterized by their circular shaped stock interface. Package Contents: MDT 1-Way Folding Stock Adapter MDT 103828-BLK: 1-Way Locking Folding Stock Adapter Carbine to Carbine Black