New owner of 28" 930 Hunting Field in Walnut. Have installed a Nordic Components +6 magazine extension with a barrel clamp and Picatinny rail. Would like to add a simple, traditional 2-point sling. Because of the magazine extension cap, the standard front attachment is no longer available. Wondering if the hole of the magazine cap or the barrel clamp would make the best front attachment location. Would also greatly appreciate specific recommendations for a sling and any required swivel hardware. Thanks in advance!