Inverted inox trigger mechanism system compatible, with litle modification, on thermoplastic handle type of OMER cayman. It brings a horizontal mechanical line release, has excellent shooting view, flawless operation, unaffected sensitivity to the short stroke trigger for durability and use in large loads. It’s short fits perfectly thus assisting in instinctive aiming for quick and angled shots. . The ideal suggestion to upgrade spearguns with handle type of OMER cayman. Instructional video:https://www.youtube.com/watch?v=E-BoQlbHYTE