Daniel Defense’s DDM4 300S AR15 Style Upper Receiver Group delivers high-performance in a compact package. This short-barreled rifle receiver is built around 10.3 inch cold hammer forged barrel with chrome lining and a pistol length gas system. The handguard is Daniel Defense’s DDM4 Rail with a full length flattop picatinny rail for the installation of optics, as well as textured grips for superior control. In addition, the DDM4 300S Upper Receiver Group is outfitted the Daniel Defense Grip-N-Rip charging handle for fast, ambidextrous handling. Features: Daniel Defense Flash Suppressor Grip-N-Rip charging handle Daniel Defense DDM4 Rail Note: All local and federal laws apply Daniel Defense DDM4 300S .300 BLK 10.3" Bbl Complete Upper Receiver Group 23-088-19020-047