Amazing how much dis-information is out there regarding Henry rifles. There are no plastic parts on any Henry, and for those who have earlier tiny caliber guns, Henry will send you free of charge metal bands and sights to replace those plastic parts. The tiny calibers use a heat treated steel for their receivers, and a brass alloy cover which is easily replaced if you have the need. The steel receivers and the brass receivers on the larger caliber rifles are all treated to exceed the pressures of their largest caliber offering, the 45-70; that means the receiver on say a 357 magnum would easily tolerate the pressure generated by a 45-70. Henry's are built tough, and IMHO, is the best lever action rifles you can buy that is 100% Made In the USA. Yes, the receivers are investment cast, and they make extensive use of MIM parts, which makes for precision fitting and uber tight tolerances. No amount of hand forging and fitting will give you the superior fit and finish found on a Henry. That said, Henry will take your gun back for an exchange or a refund if you are one of those sad few who are perpetually unhappy, no matter how much others may try to accommodate you.