The term Ion clone referrs to the original Ion marker as well as several succeeding offshoot-markers. These are divided into two main categories: first generation and second generation.

First Generation Markers (Ion, Epiphany, and SP8):
The first line of Ion-based markers was released between 05-06 and consists of the Ion, Epiphany, and SP8. These three markers follow the same main design, and as a result have a plurality of compatible parts between them. The general breakdown is as follows:
· Ion: The low-price marker that started it all. This delivers high performance for a low pricetag, and is extremely upgradeable with many aftermarket parts (enough to replace the whole marker, if desired).

· Epiphany: Upgraded stock version of the Ion, delivering stock performance that rivals that of an upgraded Ion. The external components are more durable and cosmetically-pleasing, and most parts are further modified for added comfort or stock performance.

· SP*8: The original Ion-based tactical/scenario marker, following the same successful design. SP8s have many compatible internals as an Ion, however many of the external components are unique to the SP8 only.

First Generation Tech:
Ion Tech index - All first-gen Ion markers (Ion, Epiph, SP8) use similar parts, thus the maintenance and general use is the same for all.
Epiphany Tech: Epiphanies have a few select changes to the original Ion parts, which are described here.
SP8 tech: not currently available

Second Generation Markers (IonXE, EOS, SP1, and Vibe):
The current line of Ion-based markers was released for the 2008 season and consists of the IonXE, EOS, SP1, and Vibe. These four markers are all similar to their predacessors from 2005, except with added enhancements and stock features. All four are based on the same series of redesigns, and as a result have a plurality of compatible parts between them. The general breakdown is as follows:
· IonXE: Upgraded version of the original Ion marker. Following the same trend, the IonXE delivers high performance for a low pricetag. The second-gen upgrades and stock parts help to fix many common complaints of the original Ion marker.

· Vibe: Entry-level version of the Ion. This is a bare-design marker that removes most of the non-required features of the IonXE, and costs even less than the XE.

· EOS: Upgraded version of the Epiphany marker, following the same trend as the IonXE.

· SP1: Semi-upgraded version of the SP8 tactical marker. Essentially this is a tactical/scenario IonXE, comparable in purpose to the SP8. However, the asthetics for the SP1 and SP8 are very different.

Second Generation Tech:
Coming soon.
The second generation (current) markers are functional redesigns of their preceeding versions. Of the main differences, the major changes are the following: bolt accessible out the back of body, NXT feedneck threads (where applicable), new cosmetics, new R-type regulator. Most other parts are functionally the same as the older versions.

Comparison of Ion-Based Markers:
This part of the page lists common features and characteristics of all Ion clones.
It's initially notable that the following items are common between all the markers:
· Smart Parts standard barrel thread (also fits Shocker NXT, Impulse, Nerve, Luxe).
· Bolt compatible with all markers (stock Ion bolt, Firebolt, etc).
· Interchangeable body kits (although some markers use special mounting parts, such as the SP8 or SP1).
· 9 volt battery operated.
· Similar stock board adjustment; tournament lock is available.
· Function using HPA or anti-siphon CO2.
· Rubber nubbin detents.