I acquired this marker in a trade, and I'm happy I did! I really don't have much to complain about, indian creek tends to make decent markers.
The bolt out back is great, the snatch pin slides out easy when not aired up, and stays in no problem when in use. The bolt is very easy on paint and with the eyes I have not chopped a ball yet. It's programmable and easy to walk, as well as comfortable to hold and shoot.
The stock regulator seems to work okay, however I have had it stick a few times to I'm wondering if I need to re-built it or just re-grease it. The ASA works well enough, no need to really replace it unless you find something that holds the tank more comfortably. The feedneck however, is a bit of a pain! It's easy to just replace it with a clamping one, but if that's the case why didn't they just put one on in the first place?
All in all, this marker is quite smooth and very easy to use. Smaller profile than the other freestyles too, and lighter!
One of the better electronic markers that I've used on the field. Even though ICD is done making markers, they still support them with a few triggers, feednecks and complete o-ring kits. Can't go wrong!