High quality shotgun mag springs

[badboybeeson]

Did you know our shotgun magazine spring are designed to last over 650,000 cycles? Yes six hundred and fifty thousand !!

http://sjhardware.com/store/modules.php ... cts_id=313

[Synchronizor]

Any info on the diameter, material/finish, solid length, or stiffness?

[Reaper]

How long is your spring for a 2 round mag tube extension?

[badboybeeson]

How long is your spring for a 2 round mag tube extension?

The spring is designed as a +3 for 7+1 for the Remington 870
we do the math and testing on them when we need to trim them for length for other mag tubes.

[badboybeeson]

Any info on the diameter, material/finish, solid length, or stiffness?

Material is HTSR chrome silicone and is 41thou thick, the rest of the info is proprietary information, and that info is what makes our spring better then most.

[Synchronizor]

A Cr-Si alloy is a great choice for making long-lasting springs that will be subjected to shock loading. High relative elastic limits for both compression and torsion, and low sensitivity to temperature. Points given there.

But really? The spring's diameter and solid length are proprietary information? How are folks supposed to know if the spring will be compatible with their other magazine components?

[Reaper]

I have your S & J 750 mm magazine spring. How long does it need to be for a
+2 extension, 6+1. Millimeters is OK, I can convert to inches.

conversion factor: 1 mm=.0393 inches

[badboybeeson]

A Cr-Si alloy is a great choice for making long-lasting springs that will be subjected to shock loading. High relative elastic limits for both compression and torsion, and low sensitivity to temperature. Points given there.

But really? The spring's diameter and solid length are proprietary information? How are folks supposed to know if the spring will be compatible with their other magazine components?

spring's diameter and solid length are proprietary information, no not really but we have so many people trying to rip off our ideas and copy our format, we just don't want to put any more info out there that's not needed.
people that try our products are 99% happy with what they get, we wet out to make the best product in its class, so we always ask if you have any problems with our products to let us know.
best way to find out it so try them
bbb