Why buy a complete rifle, only to discard half (or more) of its parts as you customize it? Money down the drain! Our Aero Precision AR-15 Upper Bundles contain the three core components: receiver, barrel, and an extended M-LOKA(R) handguard. You purchase separately the exact components you want to complete the rest of the upper. The result? Nothing left over to clutter up your spare parts drawer, parts you may never use! Each Aero Precision AR-15 Upper Bundle comes with Aero's mil-spec, flattop, M4-type upper receiver, with the forward assist and ejection port cover already installed. It has laser-engraved T-marks on the Picatinny rail, and M4 feed cuts inside help ensure reliab Mfg: Aero Precision