bbr3.10 extended mag base

Reccomend PETG or nylon.  Print on open edge (basically on butt end) with tree supports.  Reccomend 4 walls and 15% gyroid infill.  v2.0 is smooth and v3.0 has groves for pulling a stuck mag.

this is not a life firearm and does not increase capacity. All it does is give your pinky a place to rest.