Can anyone with solid IPSC knowledge say if any of these mods are legal for production or would that put you in open?
Hopefully this helps...
https://www.ipsc.org/pdf/RulesHandgun.pdf
APPENDIX D4: Production Division
16. 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, stippling 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 colors 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 E3a) are
permitted. However, rubber sleeves are prohibited.