Quoted:
Quoted: Mr Watters, do you know if the black buffer silver spring set up now standard in rifles is the same used in the port gun? We are also talking of such things in depth here:
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That is an excellent question. Does anyone here have a copy of TM 9-1005-309-23&P that they can check?
Good work on the collection of the different extractor springs and inserts. I wish I could find the exact dates for their introduction for my 5.56mm Timeline.
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No, don't have that TM, am curious though. As you know the whole deal is that Big Army did not want to add another part to the system, so my understanding is that the blue one was used. Later the was a huge fight because Colt's wanted to use their gold spring M4 set up, and Big Army would not accept it till 2003. So, what was the story with the silver spring and black buffer used in between? My guess it was a part in the system, possibly the port gun set up?
In regards to dates on various springs/buffers, I can come close, but not to the standard you require in your time line. I am not done with the research though.
BTW, some or one of your NSN numbers is different then what is indicated in BR II. I bet Stottman could run those numbers for us.