A full review and test of the Perun MOSFET-equipped Arcturus AT-AK12-PE AEG by ASG Olsztyn. The ARCTURUS AK-12 PE electric airsoft gun is the latest model, equipped with a built-in PERUN MOSFET and ready for 2-Burst mode. It boasts a steel stamping receiver, trigger, gas tube, and front and rear sights. The gun also features a quick spring charge gearbox, full steel gearbox teeth, 8mm steel bushing, and a microswitch trigger.