Chrome Lined Barrels..How?

[FuzzyBunny]

Like the topic says How do they (factory) chrome line rifle barrels?

Is it like getting a bumper chromed?

 

[Arizona_Mike]

Kind of. Electroplating in both situations. You don't plate just and chamber/bore but an oversized one designed for the purpose (to accomodate the chrome thickness).

Mike

 

[jerkface11]

And it's hardchrome not brightchrome.

 

[MtnCreek]

Is there anything special about cutting, crowning or drilling a gas port in a chrome lined barrel?
Thanks.

 

[briansmithwins]

The electrode goes down the bore and plates chrome directly on the steel. Baking to get rid of hydrogen* afterwards is critical.

BSW

*http://en.wikipedia.org/wiki/Hydrogen_embrittlement