pour le magwell, ca dépend de la grosseur, sinon tu vas tomber standard
pour le mag release pas de probleme:
Magazine wells cannot exceed a maximum outside width of 35mm.
Compliance is checked by way of a 35mm wide, and at least 5 mm deep, notch carved into the outside of the box, or by use of a ruler or
caliper, as approved by the officia
ting Range Master
Prohibited modifications /
parts
18.
Permitted modifications are shaped slides (flat-top, tri-top etc.), shaped trigger guards (squared, undercut etc.),bob-tail backstraps, bull or coned barrels, external extractors, finger-grooves (machined, add-on, wrap-aroundetc.), custom magazine release buttons, triggers, hammers,
single/ambidextrous thumb safeties, any open sights(which may be embedded into the slide),
and extended slide lock levers and thumb shields provided they do not act as a thumb rest