Luth-AR UR-01-E3-M4 A1 Stripped Upper Receiver, 223/5.56mm, Black Anodized - UR-01-E3-M4

This is a stripped upper receiver for AR-15 platform rifles, compatible with 223 Rem/5.56 NATO ammunition. Constructed from aluminum with black hardcoat anodize finish, it features an M4 feed ramp and measures 11.9" in length. This is a no-frills upper that requires assembly of bolt carrier group, charging handle, and other components.