A. Be semi-automatic.
B. Use 9 mm (9x19) or larger cartridges.
C. Barrel length 4 3/8" or less.
D. The unloaded firearm with the heaviest magazine must weigh 38.00 oz. or less.
E. The firearm with the largest magazine inserted must fit in the IDPA gun test box measuring 7 ¾” x 5 3/8” x 1 3/8”.
Looks like yours, cataloged at 5.5" tall is 1/8" over. Wonder if it would go in at a tilt.
Springer has a "shorten grip" option on their order form, but tit does not say by how much or what they do to the magazine.
http://www.springerprecision.com/home.html
The Box was supposedly drawn around the Glock 19, so anything in that size range will do. I
shot last weekend with a SA Ultra Compact and only wished for more sight radius, a la Compact.
I would check out the M&P 2.0 Compact 4 inch, too.