Looking for opinions or experience based on the new Appendix D4, Production Rules. D4 21.6 states "Exchange of minor External components - Sights, firing pins, firing pin retainers, pins, extractors, magazine releases, slide stops, thumb safeties, triggers, hammers, bushings, and ejectors MAY be replaced with OFM or aftermarket parts." Based on this definition, would this extended magazine release be allowed in Production now?