The FX Impact M3 and FX Impact M4: Saber Tactical RFB Precision Buttstock

The FX Impact M3 and M4 earned their reputation because you can configure them for bench, field, and hunting without starting over every season. One of the upgrades that changes how the rifle feels at the shoulder is the Saber Tactical RFB Precision Bagrider Buttstock, the rear section built for field carry and bench support on the Impact platform.

RFB Precision Bagrider Buttstock installed on an FX Impact.

What the RFB Changes on an FX Impact

Stock FX Impact rear ends work, but the RFB replaces that section with a rigid CNC piece that gives you a cleaner bag interface and a more consistent cheek-to-stock relationship when you are switching between positional shots and the bench. On my builds, that translates to less fidgeting behind the gun when I settle in for a string.

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Benchrest Work With the Bag Rider

On the bags, a square, predictable rider surface matters. The RFB is built for that, so the rear of the rifle tracks the same way when you micro-adjust between shots. Pair it with a Saber Tactical bag rider or monopod setup when you want even more rear control, and the Impact starts feeling like a dedicated precision tool instead of a hunting gun borrowed for match day.

Bag rider interface on the RFB rear section.

Field, Pest Control, and Hunting Carry

The same rear end has to work when you are walking and shouldering the rifle, not just parked on a bench. The RFB keeps enough field manners that I am comfortable running it on pest control and small game Impact builds where I still want match-capable support when I stop to shoot.

RFB-equipped Impact set up for field and hunting use.

Sling Support and Accessory Integration

Once the rear is rigid and consistent, sling points and other Saber Tactical accessories bolt into a system that already agrees with itself. That is the real advantage of staying inside the Saber Tactical ecosystem on an Impact: the buttstock, rails, grips, and rests were designed to share the same language.

Installation Reality Check

This is a rear replacement kit, not a mystery project. If you can wrench on an Impact, you can install the RFB and get back to shooting. I recommend checking cheek height and length of pull after install so the first range trip is about confirmation groups, not fighting a new weld.

More FX Impact parts: FX Impact accessories · FX Impact M4 accessories · FX accessories guide.

Frequently Asked Questions

What is the Saber Tactical RFB buttstock for the FX Impact?

The RFB Precision Bagrider Buttstock ST0092 replaces the rear section of an FX Impact stock with a rigid CNC bag-rider buttstock built for field and bench use.

Will the RFB work on Impact M3 and M4?

Yes. It is aimed at FX Impact platform builds, including the M3 and M4 configurations shooters run for competition and field work.

Does Saber Tactical sell the FX Impact rifle?

No. Saber Tactical sells the RFB buttstock and other Impact accessories. The FX Impact itself comes from FX Airguns or FX dealers.

Is the RFB only for benchrest?

No. It is built for both field and bench, which is why the bag rider interface matters without turning the rifle into a bench-only gun.

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