Polarstar F1 Review Ok, while it’s not nearly as popular as it’s counterparts, the Polarstar F1 is... Good. In this review, I will be covering several different aspects of the Polarstar F1 engine. 1. Air efficiency The Polarstar F1, according to Polarstar.com, is just a tad superior to the Jack engine as far as air efficiency. While the Jack is estimated to produce upwards of 1,000 shots, the F1 engine averages about 1,300 shots. While this isn’t the largest margin, a little goes a long way in many senarios. These numbers are also heavily affected by your setup efficiency, how your nozzle seals with your hop up, and what PSI your air rig is set too. For my personal rifle and setup, I’m running an - ASG Ultrair 48ci/3000psi Tank - Amped Ninja Regulator - Amped Airsoft Braided Line - Polarstar F1 - SPEED AIRSOFT TRIGGER (No Spring) - Amped Airsoft IGL Being a more trigger-happy player, I usually run about 2-3 games on a single air fill. I’m usually blowing through 1,000 BB’s per round as well. DON’T JUDGE! 😂 2. Trigger Response/Electronics Now, here’s the part where we discuss trigger response. For those of you who aren’t familiar with HPA systems, the speed at which you can fire the gun on semi auto and full auto, is entirely dependent on the electronic components of the HPA engine itself. (If it’s an electrical-pneumatic engine) I have been able to achieve nearly 23 rounds per second on semi-auto due to the amazing capabilities of the electronics within the Polarstar systems. 3. Accuracy/Consistency I’ll make it easy for you. It’s not super consistent. Now, for those of you that know anything about HPA engines, you know that right of the bat, the Polarstar F1, Jack, and select Wolverine Products are all what are referred to as Open-Bolt systems. They’re not as consistent as Closed-Bolt systems like the Polarstar F2, Fusion Engine, and the Valken V12. These Open-Bolt systems also often utilize rear-biased nozzles, which means that the nozzle is in the rear position after each shot is fired. This also contributes to my following point. That said, this engine seems to be a fan of heavier BBs, and higher psi. Because of the inconsistency, .28g BBs or heavier are often helpful if not needed to assist in the area of consistency. You would do well to pick up a prowin or maxx hopup to a flat hop or r-hop to help out some. 4. Rate of Fire (ROF) Bruh, this thing will go as fast as you can tune it and as fast as you can get your mags to feed. I’ve seen a player get their F1 to hit 80 RPS before. And yes, it fed. I’m telling you, this thing is fast. With my personal build, I was able to hit 55 RPS before I had to change any other settings. Every setting was stock except the ROF. Above 55 RPS, I had to start altering the other settings, as it started to just blow air through the barrel. (And my mags feed up to 70 RPS) 5. Summary When it’s all said and done, it’s a Polarstar, so it’s good. Is the best? No. Is it the worst? No. Overall Rating: 6.5/10 While the Polarstar F1 may not have all the kinks worked out, it still serves as a great introductory engine for those wanting to get into the world of HPA. My personal F1 build is on my YouTube channel if you wanna see some gameplay with one. Hope this helps anyone who cares. Cheers! 🤙🏼😎🤙🏼