Shop › GRIFFIN 9MM 3 LUG COUPLER KIT GRIFFIN 9MM 3 LUG COUPLER KIT $123.00 Griffin Armament 9MM 3 Lug Coupler Kit, Compatible w/All Pistol Silencers and Optimus, Black Finish GA9QDK Quantity: Add To Cart Added! Griffin Armament 9MM 3 Lug Coupler Kit, Compatible w/All Pistol Silencers and Optimus, Black Finish GA9QDK