Good fit for sig mpx - Magpul Industries AR Rifles MOE-K2+ Grip

The normal Sig MPX grip is skinny and rides high as it's meant to be shouldered/fired with gloves. This grip is slightly wider and has a natural rubberized feel that's more comfortable without gloves, and the lower rise keeps the safety from digging into your hand. Just beware that the rubberized texture is warmer and can get slick with oil/sweat.