In this video, I take another exciting step in my journey of upgrading the FX Impact M4, continuing my mission to build the ultimate setup. This time, I’m installing a first stage regulator, a feature I became very familiar with while tuning my FX Impact M3. Many shooters have been asking if this upgrade makes a real difference, and I'm here to find out.

I start by diving into the technical aspects of regulators—exploring different springs, configurations, and why they’re crucial for fine-tuning performance. But more importantly, I test how the first stage regulator affects some of the common problems like slow first-shot velocity and dreaded regulator creep.

Through two different tuning methods, I demonstrate how these adjustments can influence both consistency and speed. Plus, I run tests to see how fast the regulator fills the plenum after a shot, a key factor in maintaining performance during rapid firing.

By the end of the video, you'll have a clear understanding of whether a first stage regulator is an upgrade worth considering for your shooting style—or if it's unnecessary for certain setups. This is not just a review, but an in-depth look into how these components can take your FX Impact M4 to the next level of precision and reliability.

Make sure to subscribe and follow my channel for more detailed tests, upgrades, and adventures with the FX Impact M4!