Check out this thread:
There is another option on the market, and his name is Billy Striplin, of Striplincustom.com. he makes a new endcap for the factory moderator that gives you 1/2 20 unf threads to install your favorite suppressor. As soon as I found this on Facebook, I ordered one, and just received and...
www.airgunnation.com
For .22, I found the short silent thunder insert with the original shrouds (either 250 or 350 setups) is totally backyard friendly. I like the original shroud and it allows the stock to be locked folded without changing the locking pin.
For .30, I found the short silent thunder insert with the original shrouds (either 250 or 350 setup) is better than original insert but still has some bark. Using the long silent thunder insert in a 350 shroud but with a 250 barrel is more acceptable but the 350 shroud limits the compact storage of the rifle when folded. Instead I use the short silent thunder insert in the 250 shroud with 250 barrel and add a Striplin threaded cap for attaching a Ronin. This is extremely quiet for .30 and still allows compact storage with easy removal of Ronin.
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