Tiny clarification - the PSAIT result in is curved, adjustable only for over-journey and has not been issued about the SAO Legions (however I can’t speak for The brand new 10mm SAO Legion). If this was my pistol, I’d take a Dremel and hand file to your opening to widen https://gunsandammunation.com/shop/sig-sauer-p220-legion-semi-automatic-pistol/