Hello all, just joined today and have a question. Picked up noted PCP air rifle on Christmas Eve, tried it out a little bit on NYE, then took it out again last week. Aside from needing a magnified optic (mounted one I found laying around), I thought a single point sling would be good. Seems the ones made by Magpul won't work. The distance from mating surface to the retractable spheres is too short. From what I can see the distance in the receptacle in the rifle is .450" from mating surface to anular groveI don't think the Magpuls have that distance. Called up Sig and was told that the receptacles were designed with Magpul configuration in mind. Any one encounter this and found a solution? Thanks in advance.