Leapers utg flip-up tactical rear sight complete with dual aiming aperture mnt-951 - Leapers UTG Flip-up Tactical Rear Sight Complete with Dual Aiming Aperture MNT-951

Fits well on AR platform, good instructions with the product. Easy to assemble and add attachments to rails. No problems with the product with one slight exception. The rails are slightly sharp around edges. Also its a little bulky when the rubber protectors are added to the rails, otherwise good economical user friendly product.