Complete upper with all parts installed (upper parts kit/Guide rod/flat wound spring/barrel/RMR cover). Large windows for reduced mass and use of ported barrels. We will do everything we can to give you a satisfying solution. And is one of many trademarks owned by Glock, Inc.
LEO PRECISION is not affiliated with nor endorsed by Glock, Inc. This product is to be installed by a competent gunsmith.No liability is expressed or implied for damage or injury which may result from installation or use of this product.