FCG Pocket Dimensions

[Pryotex]

Great Info, Thanks for the share.

[Mad-Machinist]

according to the print......the bump is .36 from the back of the FCG pocket and .43 long. Tolerance isn't that critical......as the dimensions are ony to the hundredth of an inch on the Print.

[Greg B]

On my drawing, I can't really discern where the bump starts, or ends.
I see the .950 of the rear lug cavity, and then .491 to what looks like the corner of the bump.
But everything else on my test pocket, I can verify. And since people are saying some lowers don't even have the bump I guess I'm OK.

[Greg B]

Machining is done.
Ordered my upper half this morning, but I think it will take a while to get built & shipped.
Ah well, I'll finish it eventually.