JP Enterprises AR10 Silent Capture Spring Alternate Spring Pack



JP Enterprises AR10 Silent Capture Spring Alternate Spring Pack
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24.95 24.95 USD 24.95


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The Auxiliary Spring Rate Kit for the JP Silent Captured Spring allows custom tuning of the device to a given rifle. While the default spring installed in the JPSCS is selected to offer the best performance for the widest range of configurations, a simple disassembly and reassembly of the JPSCS with a slightly different spring rate can yield truly optimized performance, particularly for rifles without an adjustable gas block.

In selecting a spring for your rifle, install a heavier spring if you feel the buffer head fully compress and bottom out while firing the weapon. If the bolt carrier will not lock back reliably on the last round fired, even when completely gassed (in the case of an adjustable gas block), select a lighter spring.

On large-frame rifles, a lower spring rate (i.e., heavier spring) with a properly tuned gas system can often yield a faster, lighter impulse that feels almost like an AR-15 in being very easy to clear or cycle for charging. Using the JPSCS2-10 without a JP adjustable gas system will likely require a heavier spring to overcome the friction and extra mass in the bolt carrier relationship. Then again, since Armalite rifles use a McFarland gas ring and have a very low bolt/carrier internal friction, they can often strip, feed and go into battery with a lower spring rate. Because of the inevitable variability in platforms, this spring kit is designed to get any rifle cycling successfully with our JPSCS system.

The included springs from lightest to heaviest are listed below with the color with which they are coded:

JPSCS-SPRING10-100: 1 side red
JPSCS-SPRING10-105: 1 side blue and 1 side red
JPSCS-SPRING10-110: 1 side yellow and 1 side red
One spare guide rod retainer screw is also included in case of thread stripping during disassembly.

*This spring pack is compatible with both first generation and GEN 2 Silent Captured Spring AR-10 models.*
Brand JP Enterprises