RA-Tech Steel Outer Barrel for KWA USP Tactical Airsoft GBB Pistol

"Great upgrade for my standard usp. After reading various reviews and posts that the stock inner barrel on the standard usp won't fit I got the 112mm usp tactical inner barrel first and functions perfectly.

Pros:
-Steel
-adds nice weight to gun
-looks
Cons:
-16mm CW threads
-lowers gas efficiency
-need to get 112mm inner barrel if use is for standard usp

"Great upgrade for my standard usp. After reading various reviews and posts that the stock inner barrel on the usp would not align properly I went on and got the longer inner barrel made for the usp tactical which is 110 to 112mm. If u want to install the steel barrel for the standard keep in mind you do need to change the stock inner barrel to the usp tactical inner barrel. Barrel does add nice weight and more of a satisfying clank when u release the slide
Pros:
-steel, no doubt about it
-nice weight
-looks
Cons:
-Reduced gas efficiency
-threads are 16mm CW not 14mm ccw
-will not work with standard usp unless you change barrel

Hope my review helps everybody who is looking to deck out their usp

"Incredible upgrade part. A must-have for HK or GBBP enthusiasts. Drops in securely with a bit of lube. Construction is very fine, with no deformations or blemishes on the phosphate/parkerized finish. Much sturdier than the stock outer barrel. Adds some serious heft to the pistol as well, which raises some slight gas efficiency issues. Keep your gun well-tuned with quality lube and molybdenum grease and you'll have no problems.

Note that this is specifically for the USP TACTICAL, NOT THE STANDARD USP. I have seen reviews and complaints everywhere about this barrel not seating correctly in Standard USPs. Again, this is built SPECIFICALLY for the KWA USP TACTICAL.