First off, this DOES work with the UTG MK96 series of airsoft sniper rifles. I received this for christmas, and it threads right into place after removing the original barrel end cap. I got this and a suppressor to hide the extra barrel length I had from switching to a PDI unit and AEG barrels, and this did exactly what I needed it to. Need to add a suppressor or flash hider to your barrel to hide an inner barrel or aesthetically please yourself? Get it. It's a good investment.
Internal O-Ring helps keep barrel centered
Feels like a quality piece (duh, it's polar star!)
No shakes or wobbles.
Threads are very nicely machined, no burs.
Squeaks when you thread anything on it.
Different shade of black than my outer barrel (no big deal, not like it's really a visible part)
Rating: [5 of 5 Stars!]