Check here for grips:
http://www.gungrip.com/searchresults...=high+standard
Good luck. H-S pistols are full of little tricks and traps for the beginner, but if you understand the principles involved you shouldn't have many problems. But keep a record of how things come apart so you will know how they go back together. And keep the work area clean so parts will not be able to fly away then hide out and laugh at you.
Jim