Rifle Moderator Buying Guide: How to Choose the Right Silencer

Unlike many other jurisdictions, moderators (sound suppressors) are legal to own and commonly used in Ireland for both hunting and target shooting — they're considered good practice for hearing protection and neighbourly shooting rather than something unusual. If you're buying your first one, here's what actually matters.

What a moderator does

A moderator slows and cools the gases leaving the muzzle behind the bullet, reducing both the noise of the shot and, in most designs, felt recoil and muzzle flip. It won't eliminate the sonic crack of a supersonic round, but it takes the edge off the blast — which matters for your hearing, for game that might otherwise bolt at the shot, and for anyone shooting near neighbours or livestock.

Match it to your calibre

Every moderator has a bore diameter rated for a range of calibres — going too small risks baffle strike, while an oversized bore loses efficiency. Check the specific calibre range listed for the moderator rather than assuming a 'universal' fit; a .223-rated moderator, for instance, isn't the right choice for a .308.

Thread pitch matters as much as calibre

The moderator needs to thread directly onto your barrel or via an adaptor, so the thread pitch (commonly 1/2x28, 5/8x24, M14x1, M15x1 or M18x1 on rifles sold here) has to match your muzzle thread exactly. If you're not sure what your rifle is threaded for, check the spec sheet or ask us before ordering — adaptors exist for some combinations but not all.

Weight and length

A longer, heavier moderator generally gives more sound reduction but adds length and shifts the rifle's balance forward, which matters more for stalking on foot than bench shooting. Compact designs like telescopic or over-barrel moderators keep added length to a minimum for hunters who want suppression without an unwieldy rifle.

Sound reduction ratings

Moderators are typically rated in dB reduction — figures in the high 20s to low 30s dB are common for hunting moderators. Higher isn't automatically better if it comes at the cost of excessive weight or length for how you shoot; balance the rating against size and your actual use case.

Material and build

Aluminium moderators are lighter but can be less durable under sustained use; stainless steel and titanium options cost more but hold up better and often perform more consistently over time. Norwegian-made ranges like Hausken use hard-anodised aluminium baffles specifically to balance weight and durability.

Shop moderators

Browse our full range of rifle and shotgun moderators, including Hausken, Stalon and Tikka Optisup, filtered by thread and calibre. Not sure which fits your rifle? Get in touch and we'll confirm before you order.