Bone material dispensing system with locking member

A method of implanting a bone material, the method comprising:

• loading a bone material dispensing gun with the bone material from a tray, the bone material dispensing gun comprising a housing having a proximal end, a distal end, and a longitudinal axis, the proximal end having a first opening and the distal end having a second opening, the first opening and the second opening configured to slidably receive at least a portion of a plunger, and a locking member pivotably connected to an upper surface of the housing and extending adjacent to the upper surface from the housing, the locking member comprising a locking surface extending adjacent to the distal end of the housing configured to engage a portion of a tubular member, a funnel, or a combination thereof, the locking member being movable in a locking position, such as a downward position to lock the portion of the tubular member, the funnel, or the combination thereof to the housing, the tubular member being movable in a first position to align the proximal opening of the tubular member or the proximal opening of the tubular member and the funnel with the second opening of the housing to allow the tubular member or the tubular member and the funnel to receive at least the portion of the plunger to dispense the bone material.