Damn at todays ammo price that barrel shot about $18,500 through it.

Learned more about barrels in 17 minutes than 40 some odd years of shooting AR’s.  Thank you    Subscribed

I've got a new respect for Rosco barrels.

I love watching this guys videos but he makes me want to spend a small fortune buying the stuff he has.

Nitride is no joke. I've drilled multiple gas blocks for taper pins and my drill press zips right through phosphated gas blocks. With a nitride gas block, I was amazed and perturbed by how hard I had to lean on it before the bit stopped chattering.

So basically, there's no way your average shooter would ever need to replace one of these barrels.

Thank you rossco for the opportunity to see this

Considering how relatively inexpensive Rosco's barrels are, this is very impressive

Chad, with someone of your knowledge, I think it would be great to see an in-depth AR style rifle cleaning video- if you ever find the time. Awesome stuff.

Since I found a local barrel manufacturer I've used Rosco barrels. Also props to them to send off a barrel to a YouTube gunsmith to critique and show their stuff.... Regardless of outcome.

NITRIDE is damn impressive!

I've never been more proud to run Rosco barrels

The number one place to get true data and learn right here!

Built a handful of my own ARs over the years, learned more from this guy in the past week of watching the videos than I have from any one Ive talked with. From cleaning rifles and reading barrels. Blows my mind how technical this can really get, but its made where anyone can pickup the knowledge. Great work

And THIS, Boys and Girls, is why I run Rosco barrels on ALL of my new AR platform builds.
Good on ya, Rosco!
Customer for life here.
Thanks for the video and proof that I have made good choices in my barrel selections.

Anyone else smell the acetone when he used it or is it just me.

In short, once your gas port erosion begins to vent excessively and creates a tapered valley in the barrel, it's only a matter of time until the muzzle tolerance begins to open up significantly. Awesome video and thanks for taking the time to share your findings wit us. You've got my subscription.

Chad’s comment about the barrel running a suppressor makes sense since all the erosion is in the front of the barrel.

They should pay you for this... Because of your review, I'm looking at buying their product.

as an avid ar enthusiast,  this channel is a gold mine of information!  thank you so much for sharing your knowledge.. now if i even had 10% of the gauges you do!