The Saber Tactical Chassis for the FX King sets the King up as a competition-style precision rifle, with a rigid chassis, an adjustable buttstock and a front rail that accepts both Arca and Picatinny gear. It comes in Grey (ST0079) or Bronze (ST0082) and weighs 6 lbs.
It is meant for King owners who shoot matches or long sessions from a bag or bipod and want their fit set up properly. Owners of FX Panthera and FX Dynamic variants can use it as well with our King Chassis Conversion Kit ST0093.
How it's set up
The cheek rest, the butt pad and the length of pull all adjust without tools, so you can get your eye behind the scope and your shoulder square to the rifle and then leave it set. The only time you'll reach for a castle nut wrench is when you first mount the buttstock assembly to the back of the action, since that rear attachment tube shares the same diameter as an AR buffer tube and is secured with a castle nut. There's a QD sling swivel on the buttstock.
The front rail combines Arca and Picatinny, and the sides have M-LOK slots where you can add rail weights to move the balance forward. We cut a jimping pattern under the rail so it grips a shooting bag instead of sliding on it. Out of the box the chassis is sized for FX 480cc or 580cc bottles, and if you run a 700cc bottle, the Extension Rail ST0080 (Grey) / ST0081 (Bronze) extends the Arca rail almost the full length of the chassis. Saber Tactical has worked with airgunners and precision shooters throughout the sport, and our products have been tested and used in real-world hunting and competition precision shooting.
Specs
| SKUs |
ST0079 Grey, ST0082 Bronze |
| Material |
6061-T6 aluminum |
| Weight |
6 lbs |
| Front rail |
Arca Swiss plus Picatinny |
| Side slots |
M-LOK |
| Adjustments |
Cheek rest, butt pad and length of pull, tool-free |
| Sling |
QD swivel on the buttstock |
| Bottle sizes |
FX 480cc or 580cc; 700cc with Extension Rail ST0080/ST0081 |
Fits
- FX King
- FX Panthera and FX Dynamic variants, with the King Chassis Conversion Kit ST0093
- FX 480cc or 580cc bottles
- 700cc bottles with the Extension Rail ST0080/ST0081
Doesn't fit
- Panthera or Dynamic without the ST0093 conversion kit
You'll need
- An AR-style castle nut wrench (not included) to mount the buttstock assembly to the rear attachment tube on the action (same diameter as an AR buffer tube)
- Conversion Kit ST0093 for a Panthera or Dynamic
Installing and setting it up
Check bottle clearance while you install the chassis. A few customers in the EU have reported the bottle rubbing against the back of the front rail, which we have not been able to reproduce on any rifle in our shop, and we believe it comes from differences in the neck length or thickness of some carbon fiber bottles. If yours rubs, stop the installation and send us the rail, and we will mill out a section so the bottle isn't damaged. If your chassis already has bare aluminum in that spot, it has already been modified.
On a Panthera or Dynamic, a few rifles show slight safety binding with the ST0093 kit, which is fixed by running a 7 mm reamer through the chassis safety hole.
Common questions
Will this chassis fit my FX Panthera or Dynamic?
Yes, it fits with the King Chassis Conversion Kit ST0093, which includes the FX rear plug, a two-piece King-style safety, mounting screws, and the safety spring with its detent cover and screw.
Can I run a 700cc bottle?
Yes, add the Extension Rail ST0080 (Grey) or ST0081 (Bronze), which gives you more Arca rail and additional M-LOK slots.
My bottle is rubbing on the front rail, so what should I do?
Stop the installation and send us the rail, and we will mill a relief so the bottle can't be damaged.
Saber Tactical products are intended for use on airguns only. International customers: adding a restricted item to your cart can limit shipping options. See our return policy for details.
