Chambered for the 9X19mm cartridge with a 1:14" 6 groove twist. Made from Chrome-Moly vanadium 4140 steel heat treated to RC 25-32. Features a fully machined one-piece barrel extension. Muzzle threads are 1/2"-36.
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I built a new upper for my RRA rifle in 9mm and decided to use this barrel. I have never used any YHM stuff before so I was a little nervous. Barrel was well finished with a uniform color. A Plastic thread protector covered the threaded muzzle. The fit was a little looser than expected in the RRA upper receiver, but build went well. The rifling appeared uniform and smooth, but when I cleaned it the first time before firing it, the barrel was difficult to get clean. No issues when I fired the rifle the first time and the barrel was much more accurate than the RRA barrel originally equipped on the rifle. I am impressed and will not hesitate to use YHM items again.
Its pretty accurate at 50 yds.can complaint after 50 rounds still keep its accuracy.
What can I say it's a barrel, easy install, and fit is perfect
Nice and consistent finish on this barrel. Looks great and is a very competitive price.
if you don't want the hassles of a short barreled rifle (legal or otherwise), this is the way tp go. The quality is great accept the pin near the breech that clocks the barrel was too high. That makes it impossible to install the barrel nut. A few hard taps with a hammer fixed that. I put the Vortex flashhider on the muzzle. It looks very nice.