Neptune Defense was founded with a simple objective: engineer better-performing firearms components — starting with the heart of recoil control.
Today, we specialize in advanced recoil assemblies for the firearms industry. Our Variable Pitch Recoil Systems have earned a reputation for delivering measurable, drop-in performance improvements in recoil impulse, muzzle rise reduction, and cycling consistency.
But Neptune Defense was never meant to be a single-product company.
Built on Performance Engineering
Our roots are in American spring manufacturing — where precision geometry, metallurgy, and fatigue resistance determine whether a system succeeds or fails.
We apply that engineering mindset to every recoil assembly we produce:
Optimized force curves
Controlled energy storage
Consistent return-to-battery
Long service life
No gimmicks. No overcomplication. Just intelligent design that works.
Install it. Shoot it. Feel the difference.
The Foundation for What’s Next
Recoil assemblies are our starting point because they are one of the most overlooked performance variables in a firearm’s operating system.
By mastering recoil control first, we build from the core outward.
Neptune Defense is expanding into premium accessories and, in time, complete weapon systems engineered with the same principles that define our recoil products: reliability, control, and measurable performance.
We are not chasing trends.
We are building systems.
American Made. Performance Proven.
Every Neptune Defense product is manufactured with strict quality control and materials chosen for durability under real-world conditions.
We don’t believe in hype-driven marketing.
We believe in performance you can document — and feel on the first round fired.