Angstadt Arms 3-Lug Adapter 9mm A1 Style Flash Hider 1/2x36 Black AA093LHB36. 42 in Weight: 0.7 oz Condition: New Package Contents: Angstadt Arms 3-Lug A1 Style Flash Hider Angstadt Arms AA093LHB36: 3-Lug Adapter 9mm A1 Style Flash Hider 1/2x36 Black