Billet will usually be slightly heavier to make up for the lack of compressed metal grain. Forging may produce a slightly stronger receiver due to the compression of metal grain, similar to the slightly increased strength of hammer forged barrels.īillet receivers may have tighter tolerances, leading to a better fit of components and potentially better accuracy. The computerized machine “sculpts” the block into a final design. The alternative to forging is billet, where a solid block of aluminum goes into a CNC machine. The resulting shaped hunk of metal then passes through a machining process where all of the cavities and holes are created. To produce a forged receiver, a large forging press presses a block of 7075 aluminum into the desired shape. Let’s start with the foundation: the receivers.īoth the upper and lower come from machined from forgings of 7075 aluminum.

The total package comes in at a weight of 7 lbs 12 oz.

This particular rifle comes with a 600m detachable carry handle and a magazine. Un-notched Hammer compatible with 9mm use.BCM® A2 Rifle stock w/ buttplate and metal trap door.Receivers Hardcoat Anodize per MIL-A-8625F, Type III, Class 2.Receivers Machined from Aluminum Forgings 7075-T6.Gas Key Hardened to USGI Specifications.Bolt machined from Mil-Spec Carpenter No.MPI ( Magnetic Particle Inspected, per Milspec) Barrels.HPT ( High Pressure Test, per Milspec) Barrels.USGI M16A4 Government Profile Barrels with 1/7 twist rate.Manganese Phosphate Barrel Finish on entire barrel.Independently Certified Mil-Spec 11595E Barrel Steel.

Aluminum vs steel assault rifle