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Old September 12, 2018, 02:45 PM   #12
Senior Member
Join Date: March 15, 2005
Location: Central Connecticut
Posts: 3,105
I don't know if it's true, but I recall a poster once suggested that a Browning Model A5 shotgun mainspring might work as a [possibly stiffer] replacement.
I also spoke with a friend who worked at a spring manufacturing company.
He basically told me that he could probably replace any spring if he was able to personally evaluate its strength and spec's. in detail.
That is if a spring didn't simply need to be shortened or otherwise altered.
Although he did say that if a new spring was needed to fix a malfunction, it could require some trial & error in order to get it right, i.e.-to make it the right strength.
This involved a .308 MAS that had some cycling issues, but it could also pertain to any spring that was broken or needed replacement.

Last edited by arcticap; September 12, 2018 at 02:57 PM.
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