We are introducing Specna Arms HPA replicas with PolarStar engines! Externally, these are the well-known and highly valued Specna Arms replicas made of durable zinc and aluminum alloy, reinforced with steel elements in the most vulnerable points. What about internals? The heart of the replica is the US PolarStar Jack M4 engine which was entirely designed, manufactured and built in the United States. It is one of the top HPA systems available on the market and it was created to meet the requests for high performance and functionality. Replicas are equipped with the Fire Control Unit (FCU) and LP Output that allows you to adjust velocity, systems cyclic rate, and fire modes. The FCU is powered by a 7.4V Li-Po battery. That’s not all. Thanks to adding the Tornado ™ 6.03 precision barrel, the modified Flat Hop bucking (Systema) and the high-quality Hop-Up chamber (Pro-Win), these models can achieve an excellent precision of the BBs’ trajectory. In all sets available in Gunfire you will find a steel hi-cap magazine, iron sights, a Valken Ultra Rig LP Output and a Valken 48ci 3000 PSI Compressed Air Tank. Thanks to that you are ready to play almost immediately after taking the replica out of the box.