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1/25/2018 7:38:29 AM
Posted: 9/24/2002 1:52:42 PM EST
The other issue that came up on my first outing with my BM M4 (besides the noise) was that I had to adjust for very excessive windage. I understand this is a common problem, and I know that BM will fix it for free, but being a newb, I don't know exactly how to go about it.

Could someone outline the whole procedure for me? (packaging, warranty issues, etc.) I've never mailed anthing quite like it so I want to get it right.

BTW: I'm fairly sure the barrel is mis-indexed, but It would be nice to know if there is an easy way to tell for sure.
Link Posted: 9/24/2002 1:55:13 PM EST
First, you could call them. Their customer service is top notch.

When I had to send one in, I just boxed up my upper, minus the bolt assembly and charging handle, and sent it to them. Enclose with it a letter stating that you think the barrel might need re indexing and what its doing to make you think that. Pretty simple. From the day I sent mine out until the day it cam back was only 13 days.
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