BudsGunShop.com - Magazine Capacity

yes the mags are physically the same the 10 round mag is just a modified 15 round mag for sale in restricted states

Stephen, yes Sir. The 10rd magazine is the same size as the 15rd magazine but is internally blocked to only hold 10rds. The best current in stock price is here : https://globalordnance.com/beretta-magazine-9mm-10rd-fits-px4-storm-blue-finish-jm4px910-upc-082442553146/

Yes, it will, and its in stock here
https://gunmagwarehouse.com/beretta-px4-storm-full-size-9mm-10-round-magazine.html