AR build problem.

[Fred762]

What brand was the BCG?

Stoner I think..it was different from any I've seen..mostly the BCGs we are familiar with are round along the sides..this BCG had longitudinal flats milled into the sides. It has already gone back and we await the free repl asap.

[Fred762]

Got our replacement upper/BCG and bolt back today..slick as a whore's butt and works like a charm. Had to have been an off-center FP hole problem.

[Berncly]

slick as a whore's butt

Glad to hear the problem got resolved.
Thanks for adding your experience to the knowledge base.
This was a new one for me.

[Fred762]

Glad to hear the problem got resolved.
Thanks for adding your experience to the knowledge base.
This was a new one for me.

Yeah..I have not seen anything like it in 30+ yrs of fiddling w ARs or KS either for that matter. New BCG works slick too w a couple of old "spare bolts" and FPs we keep around. Thanks be to the supplier for decent service.

[Emptymag]

And by "supplier" you mean MidwayUSA.

[alpacaheat]

And by "supplier" you mean MidwayUSA.

I'm happy with them so far..ordered an 80% lower and jig on the 6th. Shipped out on the 9th...supposed to arrive the 11th.

[Fred762]

And by "supplier" you mean MidwayUSA.

Yup..been doing business w them folks for 25+ yrs..good folks.