What Is Agmass? The Patented Pump Ingredient in Outlaw Supplements Pre-Workouts

If you've ever picked up a tub of Gunslinger or Double Barrel and noticed "Agmass" on the label, you might have wondered: what is this ingredient, and why does it matter?

The short answer: it's one of the most powerful pump-enhancing ingredients in sports nutrition — and the patented version inside our products is the real deal.

Here's everything you need to know.

What Is Agmass?

Agmass is the trademarked, standardized form of agmatine sulfate, a compound derived from the amino acid L-arginine. It's manufactured to a precise purity standard and is the ingredient of choice for serious formulators who want real, consistent results — not cheap fillers.

Agmatine itself is a naturally occurring compound found in the body and in fermented foods. But dietary amounts are too small to have a measurable effect. That's why a concentrated, standardized form like Agmass is used in performance supplements.

How Does Agmass Work?

Agmass delivers its pump-enhancing effects through a few key mechanisms.

Nitric Oxide Pathway Modulation

Agmatine works differently than most pump ingredients. Rather than simply acting as a substrate for nitric oxide (NO) production, it regulates the enzymes — called nitric oxide synthases (NOS) — that control how much NO your body produces. This leads to sustained, prolonged pumps rather than a short spike and crash.

Inhibits Arginase

Arginase is the enzyme that breaks down L-arginine, which is the main precursor to nitric oxide. Agmass blocks arginase activity, meaning your body holds onto more arginine — and keeps producing more nitric oxide — for longer throughout your workout.

Neurotransmitter Activity

Agmatine also acts as a neuromodulator in the brain, interacting with receptors linked to focus, motivation, and pain perception. Some users report not just better pumps, but sharper mental focus and a higher pain threshold during intense training.

Why We Use Agmass (Not Generic Agmatine)

Not all agmatine sulfate is created equal. Generic, bulk agmatine can vary widely in purity — which means inconsistent results, batch to batch.

Agmass is standardized to 98%+ purity. That means every scoop of Gunslinger delivers the same amount of active agmatine, every time. No guessing. No underdosing. No wasted money.

We put it in our pre-workouts because it works, it's verified, and it matches our commitment to transparently dosed, third-party tested products.

What Does It Feel Like?

If you've trained with Gunslinger or Double Barrel, you've felt Agmass working — even if you didn't know what it was.

Skin-splitting pumps — muscles fill hard and stay full throughout your session
Sustained vascularity — veins stay visible well past your last set
Better mind-muscle connection — the neurotransmitter effects sharpen focus
No crash — unlike high-stimulant pump effects, Agmass works through a sustained mechanism, not a spike

Agmass + Nitro Rocket = the Pump Stack in Gunslinger

Gunslinger doesn't stop at Agmass. It's paired with Nitro Rocket, another patented ingredient — a concentrated arugula extract standardized for nitrates.

Dietary nitrates from Nitro Rocket convert to nitric oxide through a separate pathway (nitrate → nitrite → NO), which means you're activating two different NO production mechanisms at once. The result: bigger, longer-lasting pumps than either ingredient alone.

This is the difference between a formula with one token pump ingredient and a stacked, purpose-built formula where every ingredient earns its spot.

How to Use

Both Gunslinger and Double Barrel contain Agmass at effective doses. Follow the serving directions on your product label.

Timing: Take 20–30 minutes before training on an empty or light stomach for fastest absorption.

Stack tip: For maximum pump, combine Gunslinger (stimulant pre-workout) or Dead Eye (stim-free) with Double Barrel (our standalone nitric oxide formula) for an amplified vascular effect.

The Bottom Line

Agmass is not a marketing ingredient. It's a patented, purity-verified form of agmatine sulfate that delivers real, measurable pump enhancement through nitric oxide regulation, arginase inhibition, and neuromodulation.

We use it in our pre-workouts because it works — and because our customers deserve to know exactly what they're putting in their body and why.

All Outlaw Supplements products are transparently dosed with patented, third-party verified ingredients. Agmass is a registered trademark of its respective owner.