The smooth way to attach a Valhalla bipod to a rifle with a synthetic or wooden stock, or to a rifle with a pre-made spigot hole like the GRS. Carefully line up the bipod on the front of the stock, measure the placement of the spigot 12 times, ensuring a placement that allows the bipod to slide on without interfering with the barrel, and drill a hole parallell to the bore and insert the adapter with some glue. Or oil it lightly and press into a pre-made spigot hole. Secure with an M5 bolt.
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