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Old 02-13-2011, 10:06   #1
TedG
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Join Date: Nov 2002
Location: South Florida & Cleveland, Oh
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Noveske BCG vs BCM BCG

I read the various threads about the BCGs and their differences. Between BCM and Noveske, the main differences is that BCM tests every bolt and Noveske batch-tests. Additionally, the extractor set-ups are different: coil count and insert colors, blue vs black.

My question is: if I can use either BCG in my personal defense rifle, is one better than the other? I own an N4 (defense) and a BCM 20" rifle (range). I could exchange BCGs if warranted.

Thanks in advance for the advice.
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Old 02-13-2011, 23:32   #2
Constructor
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Most 5.56 bolts and carriers come from the same 4 or 5 manufacturers yet some talk like every bolt is different and everyone else's is going to break at any minute.
Some companies mainly sell to civilians, they make their own crap or buy the cheapest stuff they can in order to make the most profit, those would be the cheap rifles on the shelves at the local gunshops.
Other companies are DOD contractors and they have specs they must meet, the bolts must be made from Carpenter alloy 158 or P6 as it is known. DOD contractors sell to companies like Colt, FN, BCM, Noveske, S&W, LMT so you can pretty much bet all of them are the same alloy treated the same way.
We have found some extractor springs to be too strong and cause as many problems as they prevent, you can swap an extractor spring out to the military 5 coil black for a buck or 2.
Add a Tactical Springs extra power (red) buffer spring and a H2 buffer and you'll be good to go.
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