The BCA can be written during mastering and will be common for all discs from that master or, more usually, will be written using a YAG laser to "cut" the barcode into the aluminum reflective layer of the finished disc, potentially adding a unique barcode to each manufactured disc.
Each Nintendo optical disc contains a burst cutting area (BCA) mark, a type of barcode that is written to the disc with a YAG laser.
laser | Laser | laser-guided bomb | Selective laser sintering | Nd:YAG laser | YAG laser | Tactical High Energy Laser | Selective Laser Sintering | Sailing at the 2012 Summer Olympics – Women's Laser Radial class | laser tag | Laser lighting display | Laser (dinghy) | Laser (debit card) | Ford Laser | Excimer laser | Direct Metal Laser Sintering | Direct metal laser sintering | Transistor laser | selective laser sintering | Satellite laser ranging | satellite laser ranging | Quantum cascade laser | Lunar Laser Ranging Experiment | Lunar Laser Ranging experiment | Laser Vision | Laser Stratos | Laser safety | Laser Quest | Laser Mission | Laser Interferometer Space Antenna |
The XK1 retained the XM1's M68E1 105 mm rifled main gun, which would also be domestically produced under license with the designation KM68, as well as a fire control system by Hughes Aircraft Company and the Nd:YAG laser rangefinder.