The CBE Picatinny Mount Adapter is a simple-to-use mounting accessory that accommodates any front Picatinny style sight mounts. Compatible with: TREK PRO, TREK, Engage Hybrid (Will Lose 3rd Axis Adjustment), Engage Micro (Will Lose 3rd Axis Adjustment), CX-5 Simple Accessory-Mounting Platform for Front Picatinny Style Sight Mounts Provides 1st Axis Adjustment Ambidextrous - Can Be Used for BOTH Right & Left-Handed Lightweight, Machined Aluminum Construction