Ade Advanced Optics  M4 AR-15 AR15 Rifle Carbine Drop In Machined Aluminum Accessory Picatinny Mount System Circle Designed Ports for Lasers Flashlights Optics Scopes Sights Bipods Weaver Attachments (2-Piece)
Made From Aircraft Aluminum With Precision CNC Machining And Excellent Anodizing/Engraving Great Zero-Retention Capability For All Accessories Installed On The Rails Factory Lifetime Warranty.