Nordic Components, NC15 Extruded Stripped Upper, Fits AR15, Black Finish, Upper Receiver Eliminates Dust Cover and Forward Assist, Compatible with Milspec BCGs/Charging Handles/Barrels/Most Handguards, Flat Top Picatinny Rail, 7029-T6 Aluminum, Weight 10oz WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. Dust cover, forward assist, and brass deflector omitted Compatible with standard AR15-spec bolt carrier groups, charging handles, and barrels Flat-top Picatinny rail accommodates mounting optics or other accessories Building a bench gun or varmint rifle? Have a 50-year old axe to grind with the military for insisting on a forward assist? Whatever the reason, Nordic's extruded upper provides an economical option for those ARs that just don't need all those other bits stuck on the side of the upper.