The first gun I purchased was about 5 years ago. I got a HK USP40 full size. I didn't get the tactical version that included a threaded barrel and raised sights. I should have. At the time I was so nieve I asked myself "Would I ever need a threaded barrel?". I had no idea I could own a suppressor.
(I'm not sure yet why the images don't display full size. If you click on them they will display full size.)
Here she is:
I purchased a HK factory threaded barrel from hkparts.com. It was advertised as a direct dropin. They weren't kidding! I dropped it in and 150 rounds later, no malfunctions. You don't see the o-ring on the new barrel, but I did install it. Here it is:
Here is a pic of someone else's Osprey attached to a HK USP. It's uncanny how the style lines match up.
I chose the Osprey because:
- I found one in stock at a killer price.
- Multi caliber and thread patterns (by interchangeable pistons).
- Manufacture still supports it and makes pistons. I found some companies have abandoned support for their previous models.
- Has a booster for proper cycling of firearm.
- Has a lot of volume (by building downward) without interfering more with the sights or adding length.
- Reduces noise to a safe level without hearing protection.
- Can be disassembled for cleaning. Some cannot be.
- Serial number is on back piece. If there's a baffle strike it can be repaired, not requiring replacement, another $200 tax stamp and a wait.
So I have a .40 handgun and a .45 suppressor. The cost is 2dB of noise. The external dimensions are identical to the .40 model. The plus is a suppressor that can be used for a variety of calibers (.45 ACP, 10mm, .40 S&W, 9mm, etc).