ALEXANDER UPPER RECEIVER AR15 – 17HMR 18″ S/S FLUTED W/KIT

PRODUCT SPECIFICATIONS: Dimension     4.55 X 9.90 X 37.60 Height     4.5500 Width     9.9000 Length     37.6000 AR-15 ACCESSORY     Y CALIBER     17 HMR BARREL LENGTH IN INCHES     18 RATE OF TWIST     1:10″ BARREL MATERIAL     STEEL BARREL FINISH     STAINLESS OTHER FEATURES:     FITS STANDARD AR-15 LOWERS,      1/2-28″ THREADES STAINLESS      FLUTED BARREL W/A2 FLASH      HIDER,ALUMINUM M-LOK HANDGAURD      ,2-10RD MAGS      INCLUDES .17HMR CONVERSION KIT      CONTAINS RECOIL CASSETTE,      MAGAZINE WELL INSERT, AND      MAGAZINE CATCH TO FIT MOST      STANDARD AR-15 LOWERS