Home CMMG AR Buffer Tube Explained

AR Buffer Tube Explained

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Here’s how your BCG returns to its default position!

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30 COMMENTS

  1. You explained this perfectly! As Einstein said, if you can’t explain it to a 6 year old, then you don’t truly understand it yourself. Or something along those lines.

  2. They are also not all the same when it comes to carbines. There are commercial and military spec tubes. The mil spec is smaller in diameter and made of an extrusion. Typically it's a little stronger. There are specialized carbine tubes as well. The Vltor A5 recoil system for example is a bit longer and uses the proprietary A5 buffer and spring. If you have a stock thay wobbles, chances are it's a commercial stock on a milspec tube. If the stock doesn't fit or is so tight it barely slides, you have a milspec stock and commercial tube. Fortunately this is becoming more rare. However the commercial parts still do exist.

  3. So why do people change out these parts? What improvements can be made if you customize this section and what customizations are even there for this? This seems like it would be one of those things that have a lot of wiggle room.

  4. Buffer tubes are great because they can greatly reduce recoil. That was their original purpose, the reason AR15s are not bufferless is because the deisgn originated from the AR10. Stoner made the AR10 have a buffer system so the action would go straight back into your shoulder which would reduce recoil. The AR15 is just a scaled down version of this and the buffer tube has remained.

  5. I’m looking into building an A.R. 15, I know the lower I want, and I was wondering if any A.R. 15 parts would work with that lower, such as a trigger, buffer tube, upper, and anything else?

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