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Old 03-02-2013, 10:19 AM
tatarica762 tatarica762 is offline
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I found this video to describe various BCG's including a S&W.

AR-15 Bolt Carrier Group Comparison - YouTube

- Mine isn't as staked as the sample S&W in the video.
- It does have the more massive back part
- It does have the shrouded firing pin

I can't tell if it's been shot peened. or if it's a black or blue extractor.
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