FX DRS 500 Base

The Base of the FX DRS 500 consists of the airgun's system en barrel, without the stock. The absence of the stock means that the Base can be enriched with a stock or chassis of your own choosing, to create your optimal build. Inside, it’s crammed full with the latest airgun technology. And, of course, it comes as standard with various tuning options; from an externally adjustable regulator to an adjustable preload of the hammer spring. We’ll pick some of the highlights for you:

Air tube barrel shroud
The FX DRS 500 Base is FX’s first PCP with the air reservoir mounted around the barrel. No cylinder or bottle under the barrel, which offers the advantage of the profile being lowered significantly. This will aid you in your shooting stance, but also means that transporting and storing the FX DRS 500 Base will take less space. The air capacity of the reservoir is 208 cc.

Adjustable regulator
To have the FX DRS firing every shot with the same pressure, this PCP uses a MkII AMP regulator. This regulator is externally adjustable, making it a breeze to adjust the pressure to match the chosen pellet or slug. Doing this ensures the highest possible accuracy and guarantees an ultimate shot consistence.

Adjustable hammer spring
Without the stock attached to the system, the hammer spring preload dial can be adjusted. With more preload on the hammer, the valve will stay open longer, letting through more air. And with less preload, the valve will closer quicker, letting through less air. You can experiment with this and try to keep air pushing behind the pellet or slug for as long as possible, without and excess of air disturbing the balance when the projectile exits the barrel.

High Power plenum
FX is well-known for spending a lot of time perfecting their plenums. This is the air chamber (pre-chamber) between the regulator and the valve. It’s the exact amount of regulated compressed air that is used to propel one projectile. For large projectiles, longer barrels and higher speeds, more air will be needed to let the pellet or slug leave the barrel with the desired speed. The other way around, will a too large quantity of air needlessly reduce the shot count, while also having a negative effect on the balance of the projectile. That’s why the FX DRS features two variants of the FX High Power plenum; the HP and the bigger SHP plenum for slugs. The FX DRS 500 and 600 have an HP plenum (except the 500 in 6.35 mm, which has an SHP plenum), while the FX DRS (Pro) 700 has an SHP plenum.

Superior STX barrel system
The Superior STX barrel system features a removable liner with rifling that’s pressed in from the outside. This makes for a very smooth inner surface and very fluent rifling. All this is done to minimise friction and maximise sealing around the pellet or slug. FX DRS models with an HP plenum and calibre 5.5 or 6.35 also feature a Dual Hole transfer port in the barrel, that you can switch when using pellets or slugs. The barrel features a ½ UNF thread with thread protector for mounting an optional moderator.

Adjustable trigger
To get the very best out of the FX DRS 500 Base, its trigger is fully adjustable. With this, you can adjust the trigger exactly as you like it, making its feel match your shooting style. Both the first and second stage are adjustable and the trigger blade is adjustable in distance and height, but can also be rotated for perfect ergonomics.

Magazine options and rails
The FX DRS standard comes with a mini magazine. Thanks to this small magazine, it’s possible to mount the rifle scope very close to the barrel. If you want to mount an optional 30 MOA Weaver/Picatinny rail on the 11 mm dovetail rails, then it’s possible to use a low one with the mini magazine. We also have a higher one if you want to use the optional mega magazine with more capacity.

Cocking and filling
With the magazine in place, cocking the FX DRS is done easily by pulling the very subtle cycling side lever on the right side towards you. And to quickly refill the air reservoir, there’s a filling hole on the right side, into which you can put a fill probe. Easy!

Please note: The FX DRS comes pre-adjusted in an average state of tuning for average use. The maximum power stated in the specifications can be reached by using the multiple adjustment options on this air rifle.