Mossberg 930 Pro JM vs Mossberg SA 20

Compared both semi auto shotguns. Overall, the 930 had more stock features and functioned better. Regarding the 930, some guns may have a manufacturer defect, aside from that, if they're broken in properly, they shouldn't have any problems. Clean your gun before shooting the first time. While breaking it in, I thought I'd have some fun with pop cans and shaving cream. Speed shooting just may not be my thing.