New pcp guy

Depends on caliber. I have a .177 and at 18 fpe, it's pretty backyard friendly. Almost dead silent with an additional moderator. The .22/.25 are going be much louder. I personally think that they need an additional moderator to be friendly for suburbia. But semi rural you'll be just fine. 

I'd suggest a DonnyFL Tatsu.

If you want a Huggett I'd go with the Belita.

Gotta call Donny for the adapter anyway so just go with the Tatsu

The auditory report of an airgun is very subjective.

I say try it out first before buying any additional adapters/moderators. One of the many appeals of the Short is the length. Hang a moderator on the front, even a short fat one like a Tatsu and you just added over 4 inches, and the length increase only goes up with other moderators. 

Neither of my Vets has a moderator, just the one they come with. The Short is very quiet in OEM configuration at less than about 25 or fpe, in either .22 or .20. Loudness goes up with fpe output though, max it out around 32fpe and it'll have a little more noise, not sharp or painful or even offensive in the slightest, just not "hey is this thing broken?!?!" quiet. The Long does 41fpe and it's plenty quiet.

The Long and the Short (see what i did there) of it for me is that I'll take a bit louder as a trade-off to keeping the guns compact. But everybody has a different situation, which is why I suggest getting the gun and shooting it at whatever fpe you think you'll use it most to see what you think about the report, and if you're willing to make that trade for quieter but longer. 

(I had a Donny FL adapter for the Veteran and sold it. The extra length really bugged me. And I have a Tatsu that has been been on various guns. It's on my FT gun right now. It does okay but doesn't quite as much as my longer Huggett or my Hogan Decimeater. It's on my FT gun for all the reasons stated above, that gun is already extremely long, and a 6 or 7 inch moderator just got ridiculous, so it has the 4.33inch Tatsu. Tatsu isn't as effective as a longer skinnier at quieting down guns in my experience. It's all a trade-off though). 

If you want to keep it short, I would go with a Donny FL Tatsu or the Mini Magna if you want a Huggett. I don’t think the Atom is going to do enough to make it worth getting. Also Huggett recommends 12 FPE or less and the Taipan is going to be a lot more than that.

i wouldnt worry about moderator size myself if i needed to be ultra quiet in the backyard because 'karen' next door was hawkin on me .. itl unscrew when you dont need it .. while your at donnyfl getting the adapter i'd inquire about which can to get so you cant even tell if it fired or not lol, and pick that up at the same time ..

As has been suggested, put a Tatsu on it and you will be extremely happy with the report. Most uniformed people that hear mine think it’s not very powerful, but seeing what it does on the other end changes their minds rather quickly. Mine is putting out 30 ft. lbs. and is very quiet.

Like others say really depends on your needs. Like Franklink above, I went for the Shorty for it's length. I didn't want to add another mod on the end and see no reason to at 30fpe. Mines tuned at 880fps with the AA 16gr and is definitely quiet. Backyard friendly for sure. But my backyard friendly is different than others as I don't live super close to neighbors. I don't find it offensive at all noise wise. Tuned at 14fpe it sounds broke.