03-29-2023, 01:57 PM
tdbru Wrote:FWIW,According to the black rifle book, added buffer weight effects carrier velocity and has negligible effect on dwell time, especially with the random position of the loose weights and discs.
i'd read enough posts on this forum about the broken extractors and the likely cause that it seemed to me that if the bolt unlock got delayed a little longer, so the pressure in the case dropped down further, that extractor issues will go away. this is why I think the adjustable gas blocks are popular and useful. they can be adjusted to delay when the bolt starts to unlock as compared to a non adjustable gas block. but they can also have issues with becoming carbon fouled enough that they are no longer adjustable. So I tried a little different approach with delaying the bolt unlock. I used a standard non adjustable gas block for it's simplicity, and added mass to the reciprocating parts via a heavier (2x) buffer. This approach might not be for everyone. I've had no issues yet, but as i mentioned, I don't put my sporting arms to hard use like the service rifles receive. time will tell if this approach works well.
and I still picked up a spare extractor anyway. belt and suspenders you know.
-tdbru
The Vltor A5 buffer system supposedly solves this problem with its internal spring design.
In any case, I find the heavier weight approach much akin to keeping the throttle down on a car while only using the brake. This is why I run the lightest buffer possible and adjust the gas to the system..This way will allow the softest perceived recoil and still be reliable.
With the Rifle Speed adj gas block, the problems associated with the other adj gas blocks are a thing of the past IMO.. The only down size is expense and matching the hand guard to the higher straight line gas tube..Some hand guards will not work with the straight gas tube..