Mfg Item #: UP657M
APF 243 TARGET COMPLETE UPPER INCLUDES: - CALIBER: 243 WIN - BARREL: 24 SS 1/8 TWIST HEAVY CONTOUR - BCG: AR10 NICKEL BORON - MUZZLE DEVICE: TARGET CROWN - GAS SYSTEM: RIFLE - RAIL: APF 15.5 MLOK