Well... it wouldn't be an everyday modification to ADD a full length steel dust cover to a current gun. That would involve changing out the frame. And since that is where the serial number is defining one gun from another... you would be changing guns to add a full length dust cover.. not modifying one. Therefore, the wording under Modifications about no full length dust covers applies to both factory and custom built guns. Also, we have had clarification on the full length dust covers from HQ in the past. It adds weight to the front of the gun which could have an effect of reducing muzzle flip. Adding weights is also not allowed. Thus the ruling on Tungsten guide rods, weighted mags etc....

The only exception I could see here is if this dust cover is made of something OTHER than Carbon or Stainless steel. An aluminum full length dust cover could be argued as legal since the rule clearly states ...
Quote:
1. Full length dust covers of carbon or stainless steel.
However, according to the STI web site, it is a steel dust cover.
Quote:
Frame: STI Patented Modular Steel, Long, w/ Tactical rail,

Also notice, even on the STI web site, this pistol does not have IDPA approval. Only USPSA & IPSC.

My experience with STI magwells would also lead me to believe this pistol will not fit in the box without modifications to the magwell. It's close. Most of them have to be flattened a little to allow the box to close. And if the box in question has gotten wet and swelled.... lol Most of the folks I know using an STI/SVI pistol with a magwell have done some work to them ..... just to be on the safe side. I don't use one myself since I don't have the big hands that help index with the magwell. I practice reloads with a single stack with no magwell. That double stack opening looks huge to me, even without the magwell. :D

Bottom line, it isn't a legal IDPA gun. Some local clubs might let you get away with using it in local matches. But you would be DQ'd at any sanctioned match.
Bubba
http://www.dbl-tap.com