Custom .22LR Rimfire Build with WOOX Exactus & SP-22 Action
WOOX Exactus with a walnut design: Explore all the specs and features on our official website
Why this custom build? To push the limits of rimfire precision while blending cutting-edge materials with legacy-level craftsmanship.
What key components were chosen and why? The WOOX Exactus stock brings a precision-oriented chassis to the table, paired with the custom Summit Precision SP-22 action, FNC carbon bull barrel, and a tactical-grade suppressor. Every part was selected to reduce weight, tighten groups, and look sharp doing it.
Who is this build for? Serious rimfire competitors, precision tinkerers, or any shooter who demands a top-tier .22LR experience.
What does the reader gain? A blueprint for a high-performance, competition-ready rimfire platform with the soul of a custom rifle.
The Vision Behind the Build
When you live for precision, the rifle is more than a tool—it's a compass, pointing toward the next challenge. This custom setup was born from that mindset. Built around the Summit Precision SP-22 action, this rifle is a modern homage to the pursuit of accuracy.
And what better foundation than the WOOX Exactus ? It's a stock that feels like it was carved from the ideals of balance and beauty. The lines are bold, the fitment tight, and the walnut exterior houses a full-aluminum chassis system that screams consistency.
Add a 16-inch FNC Carbon Bull Barrel and you get a setup that's as responsive as it is rugged.
Parts That Define Performance
| Component | Description |
|---|---|
| Stock | WOOX Exactus - Precision chassis system in walnut + aluminum, built for 1000-yard stability |
| Action | Summit Precision SP-22 - Centerfire-inspired rimfire action with smooth cycling |
| Barrel | 16” FNC Carbon Bull Barrel - Lightweight, stiff, and tuned for precision |
| Bolt | Tandemkross Krossfire - Drop-in reliability and enhanced speed |
| Trigger Assembly | Manticore - Crisp, consistent break for ultimate shot control |
| Suppressor | JK Armament 105 RFX - Rimfire-rated, lightweight and easy to clean |
| Scope | Swampfox Warhawk 5-25x56 - FFP clarity with aggressive magnification range |
Tech Insight: A bull barrel is thicker than standard, maintaining rigidity and reducing vibrations that could affect bullet trajectory. When paired with carbon fiber, it sheds weight without losing stability.
Range Report & User Feel
The Exactus paired with the SP-22 feels like steering a race car on rails. Shot after shot lands with repeatable consistency. The tandem of the Manticore trigger and Krossfire bolt results in buttery-smooth operation and minimal reset time.
The Warhawk scope does more than extend your view—it pulls clarity across its magnification range, letting you engage targets far beyond what you'd expect from a .22LR. Add a suppressor and this build becomes whisper-quiet, perfect for backwoods training or low-profile range days.
This isn’t a plinker. It’s a scalpel in the hands of someone who demands tight groups and smooth function. Whether you're punching paper or chasing steel, the feel is addictive.
This Exactus build isn’t about overkill. It’s about intention.
Every part is functional art—the kind that rewards the shooter who puts in the reps. From the clean lines of the Exactus chassis to the tech-forward JK suppressor, it proves that rimfire can be both elegant and elite.
If you’re looking to elevate your .22LR game, this is a build that performs as good as it looks. Purpose-built. Precision-driven.
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