The $200 marker that took on $1,000 guns
Rebuild your Ion right.
Teardown guides, torque specs, and part references for the Smart Parts Ion, Ion 2.0, Ion XE, and Epiphany.
Ion 1.0 — stock configuration

Ion The original — most common, most parts on the used market.

Ion 2.0 New regulator, ASA, feedneck, and power button — body stays the same.

Ion XE Bolt-out-the-back, one-piece firing assembly — its own body and feedneck.

Epiphany Fire chamber volume inserts, higher pressure, distinct body and trigger.
Not sure if you've got an Ion, Ion 2.0, or XE? Here's how to tell — XE is the easy one to catch at a glance, since the body and feedneck both look different. Ion 1.0 vs 2.0 takes a closer look: the regulator is the most obvious tell, then the feedneck, then the ASA fitting. (Epiphany's easy to spot on its own — see the tile above.)
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