arjdefense

"Cast, forged, billet" is a term you will see when shopping for receivers. Here are the details of the three and how they are different. We've also written down what's good and bad about each one. Cast Receiver Casting is the process of putting molten metal into a mold to make the shape you want. The molten aluminum is poured into the mold to "cast" the lower receiver for an AR-15 rifle.  Pros of Cast Receiver     • It costs the least to make, so it is the cheapest of the three choices.     • When a metal like Aluminum A380 is used, casting is the best way to combine mechanical properties.     • The A380 is also strong and resistant to heat in a way that makes it easy to operate. Cons of Cast Receiver     • A lot of people have said that the way receivers are cast isn't very good and doesn't pay enough attention to detail. There may be cracks or holes in the finished product, which could be dangerous when using the gun.     • Nearly all casting has b