Below is the sling mount direct from Masterpiece Arms that attaches to the receivers rear. Since this model has the front piccatinny rail, you can get a QD (Quick Disconnect) adapter which will then give you the double sling capability along with the aforementioned Receiver sling mount.
https://masterpiecearms.com/shop/mpa-defender-sling-medium/

Hi Andre and welcome. MPA has a sling kit: https://masterpiecearms.com/shop/mpa-defender-sling-medium/ ------------------ Installation details here: youtube.com/watch?v=jbm37ifAcBY ------------ If you want a 2 point sling, just add a picatinny based sling rail to the accessory rail: --- https://monstrumtactical.com/quick-detach-swing-sling-pack/ ----- Cheers and stay safe!