Silencers (or sound moderators) can make a difference on air rifles/pistols and on a few of mine that I've bothered to fit them on,, they certainly DO. Whether or not they are worth the effort is another kettle of fish though... Let me give you a few postivies and negatives in my case...

 

The single Positive...

1. "DEFINITELY" quieter on "ANY" airgun I have mounted one on - includes springers, pump up and PCP types. However,, each one of us has a different interpretation of the word "quiet" so make sure you clear your head when thinking about what "you" yourself mean by that word...

 

 Negatives...

1. You have to be a bit careful of the extra length, not to bump them when handling them etc

2. They require correct fitting, if not mounted on an existing thread that came from the manufacturer

3. The cost

4. The most annoying - ACCURACY (see below)...

 

I fitted one on a pump up - Webley Rebel .177 pump up job. Not really a serious type of air rifle but can be extremely entertaining to have fun with, until I fitted a moderator,, then the bit of accuracy went out the door and down the road. First I thought it was just the air buffetting that caused the pellets to fly off at all angles giving me a shotgun pattern on a paper target. Then after a good handful of shots accompanied by some pretty powerful cursing words (4, 5 and even 6 lettered ones) I began to notice a distinct "can" type sound like an alloy pinging noise with each shot. I fired a few shots into some water and took the moderator off. The pellets all had a shiny spot on one small part of the head rim edge and tail right behind it in the same spot. The moderator had slivery deposit markings on the exit hole. I took a close look at the moderator back on the rifle and it s not concentric with the bore - miles out. I went into a gunshop a few days later and bought a silencer made to fit a 25 calibre pill and that fixed it. Still just as quiet too...

 

I can live with or without them...