What parts NOT to get coated in Nickel Boron

[feederic]

I have an opportunity to get my BarSto built 2011 limited gun coated in nickel boron. My question is, what parts should I NOT get coated?

Off the top of my head:

Firing Pin (Same reason why you shouldn't oil a firing pin)

Pins (Might become oversized, not likely though with the coating thickness)

Is it ok to coat an Aftec?

Thanks,

Eric

[Yagi]

springs, pins, barrel...for me are not to...

[feederic]

Is there a specific reason to not coat the barrel?

[a matt]

I have a friend that had his Edge hard chromed and they hard chromed everything. Down the FP hole inside the bbl. it took forever for him to figure it out. And then make it right. Just some info. I don't think his company took a lot of time on it. The chrome looked great but....

[BlueOvalBruin]

I wouldn't do the hammer, sear, and disconnector either.

[pjb45]

Typically the hammer hooks and the polished edge of the sear are not coated.

Aftec had a note on their instructions not to hard chrome it.

The outside of my Nowlin barrel is hard chromed. SV coats their barrels on the outside! Typically the feed ramp is highly polished but my SV feed ramp is coated.

Good coating is all about the prep of the parts. You can have every part coated without issues as long as they know what they are doing.