Extractor technical Q

[Chuck Plissken]

Built my own 308 based AR with mostly Aero Precision Stuff. First build in the 308 platform for me but many on the 5.56 small AR.

After around 100rds and a few issues I disassembled the bolt to clean the extractor and to inspect it. Found 2 o-rings stacked instead of the standard 1 that I've always seen...

Anyone else seen this? Took out a o-ring and put 40 more rounds down it and does great. Atleast I think it does. Brass ejects around 2-3 o'clock (right handed) I think before it was similar spread. 

[survivalshop]

  Some Manufacturers seem to like o-rings , the two Spring set up that DPMS uses on the LR series works fine .

[308kiwi]

Both of my 308 Aero BCG's have 2 o-rings under the extractor, both work just fine, I live by the old "if it aint broke then leave it the F**K alone" motto otherwise you could be doing this...........

Edited December 16, 2017 by 308kiwi

[Chuck Plissken]

14 hours ago, 308kiwi said:

Both of my 308 Aero BCG's have 2 o-rings under the extractor, both work just fine, I live by the old "if it aint broke then leave it the F**K alone" motto otherwise you could be doing this...........

Good to know. I will run both of them.