Factory Ruger Rapid Deploy Folding Rear Sight Polymer - 90415. Custom-designed Ruger folding Rear Sight seamlessly integrates on any rifle with a same-plane Picatinny rail mounting system. Can be used in conjunction with most gas block/front sights. Lightweight, polymer sight is windage-adjustable, folds flat to make room for optics and is spring-loaded to allow for rapid deployment with the push of a button. Complete assembly instructions, zeroing procedures and adjustment procedures are included in the packaging.
