This Folding Front BUIS (Back-Up Iron Sight) is compatible with MIL-spec height rear AR sights. It locks down, and can be deployed with the push of a button. It’s perfect for M4/AR-15 platforms with quick detach optics mounts.
• Optimized for AR platform
• Compatible with MIL-spec height rear AR sights
• Utilizes standard MIL-spec front sight posts and sight adjustment tools
• Locks into stowed position with push-button-actuated spring deployment
• Aluminum tower body and polymer base for optimal strength-to-weight ratio
• Circular hood protects sight post and increases speed acquiring sight picture