Developed with Steve Fisher from Sentinel Concepts, these are battle-ready sight inserts for the low-profile dovetail rifle sight bases found on some factory Remington shotguns. These are Production Sentinel Sights, which are direct replacements for the Prototype Sentinel Sights. Fiber Optic and Tritium Versions are now available. Adjustable for windage ONLY. Compatible with both 18-inch and 14-inch 870 barrels. Made in the USA, exclusively for us, by NightFision. Install Instructions here courtesy of NightFision: https://www.nightfision.com/install-guide
