ASG Olsztyn undertakes a project building an M4 AEG with the Mancraft CNC receiver as well as the Mancraft V2 gearbox. The Mancraft receiver is made of 7075 T6 aluminum alloy, which is also used in aerospace and aircraft, with an ultimate tensile strength of 570MPa. It is precisely machined using CNC machines to the highest standards, sandblasted, and anodized for a perfect fit and function. The upper receiver handguard thread and lower receiver stock mount are both TM standard, but the stock mount can also be disassembled to screw in a military-type stock with a 1-3/16-16" thread.

As for the gearbox, it 8mm bearings, a quick change spring guide, and a set of screws and pins. It is made of 7075 T6 aluminum alloy, the same used in aerospace and aircraft, with an ultimate tensile strength of 570MPa for the highest precision.