UTG PRO AK47 19-Slot Low Pro Picatinny Rail, QD, Rear Sight Proudly Designed and Manufactured in USA Fits with Romanian, Chinese, U.S. AKs and also Saigas with Rear Sight Blade and Fixed Buttstock Innovative 3-point Adjustable Locking System, Integrated Backup Rear Iron Sight Easy and Friendly Mounting Operation, Quick-detach, Flip-open Design for Convenient Gun Cleaning and Zero Retention.19 Rail Slots for Flexible Use of Accessories, Matte Black Anodizing Ensuring Best Wear Resistance and Long Term Durability Kindly refer to User Manual in the product details section below