Brownells 6.5 Grendel BCG

[rack04]

Is the Brownells 6.5 Grendel BCG good to go?

https://www.brownells.com/rifle-parts/bolt-parts/bolt-carrier-groups/m16-6-5-grendel-bolt-carrier-group-nitride-mp-prod105382.aspx

[65GrendelPilot]

I'm skeptical. My handheld measurements with cheap calipers:

Brownell's 6.5 Grendel BCG:
Firing Pin: 3.267"
Bolt Length: 2.798"
Bolt Face Depth: 1.375"

vs.

Noveske (aka Maxim?) 6.5 Grendel BCG factory headspaced and bundled w/my Noveske barrel:
Firing Pin: 3.275"
Bolt Length: 2.810"
Bolt Face Depth: 1.366"

I plan to return mine to Brownell's and buy from Maxim Firearms.

[82HALO]

I have heard good and bad about them. The one I received I returned, it was really in rough shape. Lots of machining marks all over it.

[montana]

This one is made by Tool Craft. https://ar15discounts.com/products/t...black-nitride/ I have never used them but the reviews I have read were all good.
I use BCM but it is more expensive. https://www.bravocompanyusa.com/BCM-...up-auto-mp.htm