This is a GG&G, Inc. known as the Harris Bipod Adapter, model GGG-1388.
GG&G's AR-15 Harris Bipod Adapter is extremely rugged and low profile. Features of the GG&G Bipod Adapter include a stationary standard swivel stud" a counter sunk locking cross bolt that helps eliminate the possibility of snags" a clamping side bar that is recessed into the overall body of the adapter to provide a smooth overall appearance" and solid clamping engagement" even on undersized or worn dovetails. Most importantly" the GG&G Harris Bipod Adapter makes full surface contact with the Harris bipod interface which assures a tight fit. Fits Picatinny.
Features:
Utilizes a standard swivel stud interface that is locked in a stationary position
Easy to install adapter and lightweight
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