07-28-2020, 02:22 PM
NightStalker Wrote:What started this concern was a mark in my receiver I recognize as a timing issue, again i dont know if this happened before i put the adj block on or after, I suspect before.
As for Military and the buffer spring, alot of times that spring was replaced without you knowing during annual calibration.
As an Armorer i replaced them quite often, it was cheap insurance
If you believe it is a spring issue, install a new recoil spring or try the JP SCS kit. https://www.jprifles.com/buy.php?item=JPSCS2-15K I agree with Klem and I have never seen a buffer spring fail.
Is the recoil spring an inch or more shorter than a new one??
Do you have any marks on the top part, back of the lower receiver where the buffer tube screws into the lower receiver??"Looking for impact marks of the BCG..
The barrel extension could be canted..
Bolt cam pin hole is begging to stretch??
Out of spec upper receiver BCG channel??
Direction and recoil of ejected brass??