New CHF 5.56 Barrel Defects

[USNIGHTGUNNER]

What causes this?

This is a new CHF barrel, and this is just a sampling of the screenshots that I have on this barrel. Not pretty!!!

 

[346ci]

Rust/corrosion, send it back..

 

[USNIGHTGUNNER]

Rust/corrosion, send it back..

Since chrome is supposed to be impervious to rust, was there a possible error in the chrome plating process?

 

[M4orturnate]

Whats crazy is it probably shoots great. Barrel manufacturers must hate the availability of cheap bore scopes.

 

[346ci]

Since chrome is supposed to be impervious to rust, was there a possible error in the chrome plating process?

I'd think something went amuck during that time. Either way, you paid for a new barrel and they need to know there is a issue.

 

[bigjake83]

What causes this?

This is a new CHF barrel, and this is just a sampling of the screenshots that I have on this barrel. Not pretty!!!
View attachment 8279374View attachment 8279375View attachment 8279377View attachment 8279378

Have you cleaned it yet?

 

[bigjake83]

These are from a New DD barrel I picked up recently, and after 5 passes with a bronze Brush and some Hoppes #9 Black it all came off, the areas with what looks like Rust just wiped right out.

After Cleaning..

 

[USNIGHTGUNNER]

Have you cleaned it yet?

Great question, and yes I have.

 

[USNIGHTGUNNER]

I consulted with a good friend on this that has over 25 yrs experience building ARs, and I quote

"I’ve seen this a lot in (a particular manufacturer) CHF barrels. It’s sort of a copper colored substance that follows the contours of the lands and grooves.

I’ve speculated that it is some sort of leftover release agent or jacket material from proof loads. Hitting it hard with JB Bore Paste or KG-2 will not only remove it, but will ready the barrel for running super clean and accurate without wasting a round."

 

[USNIGHTGUNNER]

Update on the barrels. According to the manufacturer, these are electrical shorts that occurred during the chroming process.

 

[Naaman]

Update on the barrels. According to the manufacturer, these are electrical shorts that occurred during the chroming process.

Interesting. Did they say its defective?

 

[USNIGHTGUNNER]

Interesting. Did they say its defective?

Yes, and they indicated that the barrel should have been pulled. It slipped through their QC.

 

[Naaman]

It sucks when we have to use customer service, but when we do, it's nice when they take ownership.