DPMS M4 Complete Upper Features The DPMS M4 Complete Upper is chambered in 5.56 and built around a 16 barrel giving shooters a rifle-length platform suited to both home defense and range use. The quad rail handguard surrounds the barrel on all four sides allowing accessories such as lights lasers or foregrips to be mounted virtually anywhere along its length. This upper attaches to any mil-spec AR-15 lower making it a practical option for builders completing a rifle or replacing a worn upper. Its flat-top receiver design accepts standard AR optics mounts for scopes or red dots. Finished in black the upper resists wear from regular handling and range use while matching most AR-15 builds. As a complete upper it saves builders from having to source and assemble individual components like the barrel gas system and handguard separately. This makes it a time-saving option for anyone assembling a rifle from a stripped lower or upgrading an existing build. For AR-15 owners looking for a dependable 5.56 upper without sourcing parts individually this DPMS M4 upper is a straightforward choice. DPMS M4 Complete Upper Specifications Manufacturer: DPMS Model: M4 Complete Upper Type: Complete Upper Caliber: 5.56 Barrel Length: 16 Color: Black Available At: GrabAGun