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Posted: 2/20/2009 3:50:38 PM EDT
| BCM Black insert, spring and O ring: what do they do? How do they improve performance/reliability? How much do they add to the cost? thanks. |
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what do they do?
Copied and pasted from BCM website: design made for the increased extractor tension required on many AR15, M4, M16 short barreled rifles. This product also inproves the reliability on a standard 16" and 14.5" carbines. How do they improve performance/reliability?
Copied and pasted from BCM website: The BCM Extractor Spring is a heavy 5 coil design made for the increased extractor tension How much do they add to the cost? thanks.
Copied and pasted from BCM website: Our Price: $4.95 |
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I use it on my carbine gas system, and would highly recommend it for any carbine gas system, to improve its extraction performance.
In my own opinion and experience midlength and rifle gas systems don't need the extra power extractor spring, the black insert and the O-ring would just be fine. Get Bravo's 3 pack package, it cost less, only about $3.98 per set and extra sets are nice to have for spares. |
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