The present embodiments provide a cap for attachment to a distal end of an endoscope. The cap may comprise a proximal portion comprising a tubular body with a lumen extending therethrough, wherein the proximal end is configured for securement to the distal end of the endoscope, and a distal portion having a first arm extending to a first distal end, the first arm being movable such that a first end of the first arm is moveable laterally with respect to a longitudinal axis defined by the tubular body.