MKA 1919 Low Power/Extra Power Recoil Spring -
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recoil spring helps cycling low power loads.
We have switched to a red spring to make it easier to know which is which
Made with Stainless wire
1300 fps and lower 2 3/4" ammo only
DO NOT use with 3" shells.
EXTRA POWER recoil Spring
5% stiffer spring for extra heavy loads
Stainless wire, YELLOW color
most likely will not cycle any loads under 1300 fps
Extra Power spring heavy loads - Yellow
Reduced Power Spring light loads - Red