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Posted: 11/19/2008 8:50:04 PM EDT
Hey gang,
I am new to the AR system and just received my BCM middie upper.  I got a new bolt and it came with an o-ring.  Where does the o-ring go?  I am assuming it is for the gas tube.  I searched for a diagram with no luck.

Thanks
Link Posted: 11/19/2008 9:00:14 PM EDT
[Last Edit: 11/19/2008 9:00:28 PM EDT by platypusREX]
For me, the trash can, for others, it goes around the extractor spring.
Link Posted: 11/20/2008 5:54:19 AM EDT
Originally Posted By platypusREX:
For me, the trash can,


+1

Link Posted: 11/20/2008 7:16:16 AM EDT
Originally Posted By WesternAR:
Hey gang,
I am new to the AR system and just received my BCM middie upper.  I got a new bolt and it came with an o-ring.  Where does the o-ring go?  I am assuming it is for the gas tube.  I searched for a diagram with no luck.

Thanks


http://www.ar15.com/forums/topic.html?b=3&f=118&t=397989
Link Posted: 11/20/2008 10:21:54 AM EDT
Thanks for help guys.  This info helped a ton.  Learn something new every day!
Link Posted: 11/20/2008 10:34:27 AM EDT
[Last Edit: 11/20/2008 10:34:36 AM EDT by TehLlama42]
Just start looking for QUIB's post on maintenance/cleaning/disassmbly - you'll start learning a ton in a hurry, highly recommended.
I run the black donut spacer on the bolts I run with crappy ammunition, but with a wolff springs the standard extractor setup is just fine.
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