Hi William and welcome. Not directly, you will need the RMSc Optics Plate: beretta.com/en-us/product/beretta-apx-a1-carry-red-dot-optic-plate-kit--holosun-k-series-footprint-EUS03063?srsltid=AfmBOoo9HXYmC3c5zpbJQyxu-Afv_tdngVa3H6fkJtCC5t2WXQtsvFGd ------------------------- Cheers and stay safe!

you will need a adapter plate which you can get from berreta here beretta.com/en-us/product/beretta-apx-a1-carry-red-dot-optic-plate-kit--holosun-k-series-footprint-EUS03063

Good evening to you!! Yes, the Holosun HE407K-GR X2 will fit the Beretta APX A1 Compact. It uses the Holosun "K" footprint, which is compatible with the RMSc footprint, and Beretta offers an adapter plate specifically for mounting Holosun K-series optics on the APX A1 Carry and Compact. Hope this helps. Have a good rest of your day.