This is a Accu-Tac Part known as the Sled Feet, model SF-A000.
The Accu-Tac Sled Feet are perfect for F-Class users" and soft or flat terrains. The Sled Feet are compatible with all Accu-Tac bipods. They are screwed in and come with the needed hardware for any G1 or G2 bipod models.
Features:
Convert bipod feet to sleds
Screw-in attachment
