http://www.ipsc.org/pdf/RulesHandgun.pdf
the changes grays does, affects rules 16.1 and 17.1
since the springs and different trigger travel stop is clearly aftermarket
Original parts and components offered by the OFM as standard equipment, or as an option, for a specific model
handgun on the IPSC approved handgun list are permitted, subject to the following:
16.1 Modifications to them, other than minor detailing (the removal of burrs and/or adjustments unavoidably
required in order to fit replacement OFM parts or components), are prohibited. Other prohibited
modifications include those which facilitate faster reloading (e.g. flared, enlarged and/or add-on
magwells, etc.), changing the original color and/or finish of a handgun, and/or adding stripes or other
embellishments.
16.2 Magazines accessible to a competitor during a COF must not contain more than 15 rounds at the Start
Signal. Identifying marks or decals, internal capacity limiters, bumper pads and additional witness holes,
which add or remove negligible weight to/from magazines, are permitted.
16.3 Sights may be trimmed, adjusted and/or have sight black applied. Sights may also be fitted with fiber
optic or similar inserts.
17. Aftermarket parts, components and accessories are prohibited, except as follows:
17.1 Aftermarket magazines are permitted, subject to 16.2 above.
17.2 Aftermarket open sights (see Rule 5.1.3.1) are permitted, provided their installation and/or adjustment
requires no alteration to the handgun.
17.3 Aftermarket grip panels which match the profile and contours of the OFM standard or optional grip
panels for the approved handgun and/or the application of tape on grips (see Appendix E3) are permitted.
However, rubber sleeves are prohibited