.177 (4.5mm) Cal. Air Arms S400 Biathlon Air Rifle

$1,600.00
Article number: 3653
Availability: Order On Demand Item
Delivery time: This item is currently out of stock at this location, but we can usually get it to you in 3-7 days from another location.

The Air Arms Precision Biathlon rifle delivers world-class accuracy. Air Arms is known for making extremely accurate guns, and the Biathlon is no exception. This air rifle is dressed in a unique white poplar stock with adjustable black cheekpiece and rubber buttpad. If you don't shoot competitively and just want a very accurate repeater, install a compact scope on the 11mm dovetail. Because the dovetail is very short, you'll need to use a 2-piece mount.

Keep your extra rotary clips in the slots of the right-hand forearm. Load them before each match so there's no fumbling when the pressure is on!



  • Air Arms S400 Biathlon air rifle
  • Precharged pneumatic (200 bar max fill pressure)
  • Bolt-action
  • 5-shot repeater (self-indexing rotary clip)
  • Removable air reservoir
  • Match sights: globe front accepts inserts, rear diopter (not included)
  • 11mm dovetail
  • 5-way adjustable match trigger
  • Lothar Walther barrel
  • White poplar stock
  • Cheekpiece adjusts vertically and horizontally
  • Buttpad adjusts vertically
  • 4 rotary clips fit in slots in right-hand forearm
  • Beautiful deep bluing
  • Stock is flawlessly executed
  • 29.875" between front & rear sight positions
  • 10.25" long accessory rail
  • 12.12" to 12.50" length of pull (LOP)
  • 5.15 ft-lbs.
  • Includes owner's manual, 7 Allen keys, four 5-shot clips, fill adapter & spanner (to remove reservoir)

* Rear Diopter sight not included

Max Velocity 564 fps
Overall Length 41.0"
Buttplate Adjustable
Function Repeater
Weight 6.99 lbs
Scopeable 11mm dovetail
Safety none
Suggested for Competition
Caliber .177 (4.5mm)
Muzzle Energy 5.15 ft/lbs
Loudness 2-Low-Medium
Barrel Length 20.5"
Shot Capacity 5
Barrel Rifled
Front Sight Globe w/Aperture Inserts
Rear Sight none
Trigger Five-way adjustable match
Action Bolt-action
Powerplant Pre-charged pneumatic
Body Type Rifle
Operating Pressure 2900 PSI / 200 BAR
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