A surgical access device comprising: a cannula having a housing and an elongated portion extending distally from the housing, the elongated portion defining a channel extending therethrough, a distal portion of the elongated portion configured for engaging tissue; and a sleeve stop configured for selective engagement with the elongated portion of the cannula, and configured to limit distal advancement of the cannula with respect to tissue, the sleeve stop comprising: a body portion having a first section and a second section, the first section including a threaded aperture, the second section including a threaded aperture, the first section and the second section defining an aperture therebetween for slidable reception of the elongated portion of the cannula; and an adjustable member configured to threadably engage the threaded aperture of the first section and the threaded aperture of the second section, wherein rotation of the adjustable member in a first direction relative to the first section of the sleeve stop causes the diameter of the aperture to increase to allow the sleeve stop to slide to a desired position along the elongated portion of the cannula, and wherein rotation of the adjustable member in a second direction relative to the first section of the sleeve stop causes the diameter of the aperture to decrease such that the sleeve stop non-slidingly engages the elongated portion of the cannula, characterized in that the first section is pivotable relative to the second section about a pivot. a cannula having a housing and an elongated portion extending distally from the housing, the elongated portion defining a channel extending therethrough, a distal portion of the elongated portion configured for engaging tissue; and a sleeve stop configured for selective engagement with the elongated portion of the cannula, and configured to limit distal advancement of the cannula with respect to tissue, the sleeve stop comprising: a body portion having a first section and a second section, the first section including a threaded aperture, the second section including a threaded aperture, the first section and the second section defining an aperture therebetween for slidable reception of the elongated portion of the cannula; and an adjustable member configured to threadably engage the threaded aperture of the first section and the threaded aperture of the second section, wherein rotation of the adjustable member in a first direction relative to the first section of the sleeve stop causes the diameter of the aperture to increase to allow the sleeve stop to slide to a desired position along the elongated portion of the cannula, and wherein rotation of the adjustable member in a second direction relative to the first section of the sleeve stop causes the diameter of the aperture to decrease such that the sleeve stop non-slidingly engages the elongated portion of the cannula, a body portion having a first section and a second section, the first section including a threaded aperture, the second section including a threaded aperture, the first section and the second section defining an aperture therebetween for slidable reception of the elongated portion of the cannula; and an adjustable member configured to threadably engage the threaded aperture of the first section and the threaded aperture of the second section, wherein rotation of the adjustable member in a first direction relative to the first section of the sleeve stop causes the diameter of the aperture to increase to allow the sleeve stop to slide to a desired position along the elongated portion of the cannula, and wherein rotation of the adjustable member in a second direction relative to the first section of the sleeve stop causes the diameter of the aperture to decrease such that the sleeve stop non-slidingly engages the elongated portion of the cannula, characterized in that the first section is pivotable relative to the second section about a pivot.