The Shield RMSc package is for any slimline glock, Glock 42, 43, 43X, 48. The cut is deep enough to co-witness with factory height sights so there is no need for supressor highs. We particularly appreciate the Trijicon HD night sights with ours… but that’s up to you. Talk to your technician about upgrading your sights to Trijicon HD nitght sights while your gun is in getting cut. We do cost on parts for custom shop customers.