Holders usable to retain a clip, magazine, or other container for ammunition can include a body configured for attachment to a surface and an insertable member extending from the body, the insertable member being adapted for insertion into the interior of a container for ammunition. The insertable member can bias the container for ammunition against a portion of the body to create friction between the container and the body and prevent relative movement between the two objects. Alternatively or additionally, contact between the insertable member and the interior of the container, can create friction for preventing relative movement between the container for ammunition and the holder. The insertable element can be compressible to enable passage through an external opening in the container to facilitate removal or insertion.