Hatsan Moderator

The Hatsan moderator is a screw-on moderator for air guns with a ½"x20 UNF muzzle thread. It is made from black aluminium with a diameter of 42 mm and screws directly onto the barrel without tools. Its purpose is to take the edge off the muzzle report, so shooting in the garden or on the range is quieter for both you and your neighbours.

On an air gun, much of the noise comes from the air forced out of the muzzle behind the pellet. A moderator gives the air room to expand and slow down before it escapes, which is why the effect is usually greatest on PCP air rifles, where the mechanism itself is quieter than a spring piston. ½"x20 UNF is the most common thread on air guns, and Hatsan uses it itself on models such as the BT65 SB and Model 25 SuperCharger in the versions without an integrated QE moderator.

Moderator for air guns with ½" UNF

What you need to know before buying:

• ½"x20 UNF thread: The standard thread on the vast majority of air guns with a threaded muzzle. Check in the manual or with a caliper that your gun has exactly this thread – metric threads will not fit.
• Aluminium construction: Aluminium keeps the weight down, so the rifle does not become unnecessarily muzzle-heavy, and the balance changes as little as possible compared with a heavier steel tube.
• 42 mm diameter: Worth knowing if you shoot with open sights or a low-mounted riflescope: on some guns a moderator can block the foresight or touch a low objective lens.
• Tool-free fitting: The moderator is screwed on by hand, so it can be removed for cleaning or transport and refitted in seconds.
• Broad compatibility: Fits both Hatsan and other brands with ½"x20 UNF. Models with an integrated moderator, such as Hatsan's QE series, do not need an extra moderator.

Maintenance and safety

• Before every session, check that the moderator is fully tightened and sits straight on the barrel. A misaligned moderator can affect the pellet's path and, at worst, be hit by it.
• Never tighten it with tools or excessive force – aluminium threads can be damaged.
• Remove it regularly and clean out lead residue and dust with a dry cloth or soft brush.
• The moderator makes the shot quieter, not silent. Handle the gun with the same care as always, and wear shooting glasses.