The PCP air rifle FX DRS MkII Classic represents the second generation of the revolutionary DRS series from Swedish manufacturer FX Airguns. It retains its unique design with an air cylinder surrounding the barrel, giving it a slim profile more reminiscent of a traditional centrefire rifle than a conventional PCP air rifle. The new MkII generation introduces a number of significant technical improvements focused on greater air system efficiency, increased power potential and easier maintenance.

Design and barrel
The entire series is built around the unusual APB (Air Pressure Barrel) system, in which the barrel runs directly through the pressurised air cylinder. This solution eliminates the need for a conventional cylinder beneath the barrel, allowing the entire air rifle to retain an exceptionally slim profile.
The second generation features a redesigned version of this system, making maintenance and barrel liner replacement significantly easier. While the original model required the compressed air to be released before replacement, the MkII allows the liner to be replaced without depressurising the air cylinder.
The barrel uses the proven Superior Smooth Twist X (STX) system with an interchangeable liner, allowing its configuration to be adapted to different types of ammunition. The muzzle features a 1/2 UNF thread for fitting a sound moderator. The outer diameter of the shroud is 34 millimetres.

Air system
One of the most significant innovations in the second generation is the new Dynamic Block with optimised airflow, which, together with the redesigned Power Plenum with a capacity of 25 cc enables more efficient use of compressed air and expands the range of power adjustments, particularly when using heavier projectiles.
The plenum is positioned beneath the receiver and resembles the magazine of a conventional firearm. The actual detachable magazine, however, is located above it, within the loading mechanism.
To maintain the air rifle's sleek appearance, the adjustment controls for the adjustable AMP MkII regulator and hammer spring have been moved inside the stock, which must be removed to adjust them. However, the air rifle is already factory-tuned to offer the best balance of power, accuracy and air consumption with most commonly available ammunition straight out of the box.

The maximum fill pressure is 230 bar, and the air cylinder is filled using a MkIII filling probe with a quick connector. The current cylinder pressure can be monitored on the integrated pressure gauge, while a separate gauge can be added to monitor regulator pressure.
NOTE: The remaining pressure in this air rifle's cylinder must be monitored carefully. We recommend maintaining a pressure of approximately 150 bar or above. If the pressure drops below the regulator's set pressure, the air rifle may discharge all its air.
Optics and controls
The optics mounting system has also received a significant upgrade. While the original DRS Classic came with only an 11mm dovetail rail as standard, the new MkII generation comes factory-equipped with a removable Picatinny rail with a 30 MOA inclination. This inclination provides a greater scope elevation adjustment range for shooting at longer distances. Once the Picatinny rail is removed, the original 11mm rail remains available.
Exceptionally smooth and fast cycling is ensured by the side cocking lever. A fully adjustable two-stage trigger comes as standard, allowing its action to be tailored to individual preferences. The trigger blade itself can also be adjusted vertically and rotated to suit the shooter. The right-hand side of the receiver also features a manual safety lever.

Polymer stock
The "Synthetic" version is fitted with a lightweight, durable polymer stock with a Soft Touch finish that provides a comfortable, secure grip. Its symmetrical design allows comfortable use by both right- and left-handed shooters, although the cocking mechanism itself is fixed on the right-hand side.
The ergonomically shaped stock is complemented by a fixed cheekpiece and rubber recoil pad. The synthetic material also offers easy maintenance and resistance to adverse weather conditions.