Which of these setups would work with the 9mm Aero Precision EPIC upper in a suppressed configuration. Identify which set of weight masses to uses. — 1 Answer

This is what the manufacturer states in regard to 9mm SCS Selection. Ammo choice, configuration and overall feel will dictate the ratio of steel and tungsten masses you choose for your 9mm Silent Captured Spring. Every combination will be different, but here are some general rules:
• Any Silent Captured Spring model will cycle most ammunitions.
However, if you are shooting very low pressure ammo, your
SCS should have all or mostly steel masses.
• Very short barrels like our Ultralight 9mm barrel provide less
port pressure than a longer barrel does. For the same reason
as above, an all or mostly steel SCS is the better choice to
ensure reliable cycling. Be aware that a combination of very
low pressure ammunition and a very short barrel may lead to
unreliable cycling even with the lightest SCS setup.
• A heavier (more tungsten) configuration will cycle more
slowly with a softer felt recoil while a lighter (more steel)
configuration will cycle more quickly with a “snappier” feel.