There is a reason I keep some SA surplus on hand. Years ago I tested some of the cheaper ammo just for fun and had a few that were not always 100%. I would check everything and it is always a good idea to have a sare parts kit on hand. The SA ammo is loaded hot so I know that if it will not cycle on that then there are issues. New rubbers and spring in the extractor will not hurt if the claw looks OK.