A silencer that wasnt quiet.

I had a question about how to make a silencer quieter as it seemed quite loud and didn't seem to be working well at all. It was sent to be to be modified and i must say with the addition of a little sound deadening foam it went from loud to very quiet indeed.
First came the hard part. As some of you will know most silencers are sealed up by the manufacturer so you cant mess about with the insides but, that couldn't stop me from taking a look.
The use of a little heat to the front end cap eventually melted the resin that some manufactures use to lock the threads. With the silencer screw cap firmly held in the vice and some mole grips round the outer cylinder of the silencer it took a little over 5 minuetes to take off. The downside of this is that the outer alloy tube becomes damaged  as quite a bit of grip is needed to un-scerw the unit.

As you can see from the picture it becomes unusable after removal.....very good glue/resin is used to stop you tampering with the silencer. I cut a new section of light steel tube to size and then started work on the inside. In the centre core was a few little plastic cups, two plastic washer`s and two springs.

Now, the barrel end has the alloy core set into it. This has six holes cut into it allowing the spent air to resonate inside. Now this is where the sound foam comes in. By adding the sound foam around the inner core and replacing the outer cover this still allows the air to escape but the sound is deadened by the foam.
The little plastic cups are put back in the same way they came out and the end cap is screwed tightly on. NOTE....i haven't used any thread lock because if, at some point, you want to take the silencer to bits again for cleaning you will probably damage the outer trying to strip it down.

So, after spraying the silencer with five coats of Matt black paint this is what it looks like and after testing it out on a BSA PCP rifle it is much quieter and the annoying crack of air is no more.

One happy customer.