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So is the main test whether it will lock open with pmc or similar ammo?
And can someone explain the springco not locking back more, is it just stiffer and pushing back with more resistance? I had thought it was similar to a new mil spec spring but just lasted longer
Last edited by JG007; 03-31-16 at 18:53. Reason: Second question
So the A5H1 with mil spec (not sprinco?) spring most closely matches the sr15? Both the 16 and 14.5?
here is a similar thread
https://www.m4carbine.net/showthread...-the-A5-system
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